☆ 4.8 Article

Lifetime measurement of the first excited 2+ state in 16C

PHYSICAL REVIEW LETTERS (2008)

期刊

PHYSICAL REVIEW LETTERS

卷 100, 期 15, 页码 -

出版社

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevLett.100.152501

关键词

-

类别

Physics, Multidisciplinary

向作者/读者索取更多资源

Protocol

Reagent

摘要

The lifetime of the 2(1)(+) state in C-16 has been measured with the recoil distance method using the Be-9(Be-9,2p) fusion-evaporation reaction at a beam energy of 40 MeV. The mean lifetime was measured to be 11.7(20) ps corresponding to a B(E2; 2(1)(+)-> 0(+)) value of 4.15(73)e(2) fm(4) [1.73(30) W.u.], consistent with other even-even closed shell nuclei. Our result does not support an interpretation for decoupled valence neutrons.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Biochemistry & Molecular Biology

Fluorescence Lifetimes of NIR-Emitting Molecules with Excited-State Intramolecular Proton Transfer

Yonghao Li, Dipendra Dahal, Yi Pang

Summary: This study aimed to evaluate the fluorescence lifetime characteristics of newly developed NIR-emitting ESIPT dyes in a polar aprotic solvent. The results showed a two-component exponential decay in approximately 2-4 ns, which could be attributed to the excited keto tautomers. The probe structures significantly influenced both fluorescence lifetimes and fractional contributions of each component.

MOLECULES (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Photochemical [2+4]-Dimerization Reaction from the Excited State

Sapna Ahuja, Sruthy Baburaj, Lakshmy Kannadi Valloli, Sarvar Aminovich Rakhimov, Kavyasree Manal, Aakrati Kushwaha, Steffen Jockusch, Malcolm D. E. Forbes, Jayaraman Sivaguru

Summary: Aryl-maleimides undergo a novel [2+4]-photodimerization instead of the expected [2+2]-photodimerization, and the stereochemistry of the photodimer formed complements the product observed under thermal conditions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

添加到收藏夹

Article Nanoscience & Nanotechnology

Excited state lifetime modulation in semiconductor nanocrystals for super-resolution imaging

Subhabrata Ghosh, Jennifer A. Hollingsworth, Jose Ignacio Gallea, Somak Majumder, Joerg Enderlein, Alexey Chizhik

Summary: This article reports on the proof of principle measurements of a super-resolution imaging method based on the excitation field density-dependent lifetime modulation of semiconductor nanocrystals. Experimental results demonstrate that the method can achieve a spatial resolution of several tens of nanometers at moderate fluorescence excitation intensity.

NANOTECHNOLOGY (2022)

添加到收藏夹

Article Optics

Measurement of the hyperfine coupling constants and absolute energies of the 8p 2P1/2 and 8p 2P3/2 levels in atomic cesium

Jonah A. Quirk, Liam Sherman, Amy Damitz, Carol E. Tanner, D. S. Elliott

Summary: We report the measurements of the hyperfine coupling constant of the 8p 2P1/2 level of atomic cesium, 133Cs, with a relative uncertainty of & AP;0.019%. Our result, A = 42.933 (8) MHz, is in good agreement with recent theoretical results. We also examine the hyperfine structure of the 8p 2P3/2 level and derive new energy values for the 8p 2P1/2 and 8p 2P3/2 levels of cesium.

PHYSICAL REVIEW A (2023)

添加到收藏夹

Article Biochemistry & Molecular Biology

Selective population of triplet excited states in heavy-atom-free BODIPY-C60 based molecular assemblies

Anam Fatima, Jad Rabah, Emmanuel Allard, Helene Fensterbank, Karen Wright, Gotard Burdzinski, Gilles Clavier, Michel Sliwa, Thomas Pino, Rachel Meallet-Renault, Karine Steenkeste, Minh-Huong Ha-Thi

Summary: This study presents the photophysical studies on a BODIPY-fullerene-distyryl BODIPY triad and its reference dyads. The association of the two chromophore units linked by a fullerene moiety leads to strong light absorption and the formation of triplet-excited states. The lifetime and formation quantum yield of the triplet-excited states are investigated, and triplet-triplet annihilation up-conversion is characterized.

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES (2022)

添加到收藏夹

Article Physics, Multidisciplinary

Experimental lifetime of the a1Δ electronically excited state of CH-

Gustav Eklund, Moa K. Kristiansson, K. C. Chartkunchand, Emma K. Anderson, Malcolm Simpson, Roland Wester, Henning T. Schmidt, Henning Zettergren, Henrik Cederquist, Wolf D. Geppert

Summary: This study investigates the lifetimes of the a(1)Delta excited state and the X-3 Sigma(-) ground-state in CH- ion beams. The experimental results show a significantly longer lifetime compared to previous research, highlighting the difficulties in measuring slow decays.

PHYSICAL REVIEW RESEARCH (2022)

添加到收藏夹

Article Physics, Nuclear

Breakup effects in the 16C +p and 16C +d reactions

Shubhchintak, P. Descouvemont

Summary: We analyzed the 16C +p and 16C +d reactions and described the 16C nucleus using the four- and five-body continuum discretized coupled channel method. Our analysis of transition amplitude and inclusion of pseudo-states showed good agreement with experimental results, allowing for the study of proton and deuteron elastic scattering.

PHYSICAL REVIEW C (2022)

添加到收藏夹

Article Chemistry, Applied

Push-pulling induces the excited-state intramolecular proton transfer in 2′-aminochalcones

Catia I. C. Esteves, Luis F. B. Fontes, A. Filipa N. Borges, Joao Rocha, Artur M. S. Silva, Samuel Guieu

Summary: It is discovered that 2'-aminochalcones with a strong push-pull character exhibit dual emission due to the Excited State Intramolecular Proton Transfer (ESIPT) between ketoenamine and enol-imine tautomers. The strength of hydrogen bonds is correlated with the tautomerization energy gap, depending on the electron donating or electron withdrawing group on the amine.

DYES AND PIGMENTS (2022)

添加到收藏夹

Article Chemistry, Physical

Vibrational-state dependent decay dynamics of 2-pyridone excited to the S1 electronic state

Dongyuan Yang, Yanjun Min, Baihui Feng, Xueming Yang, Guorong Wu

Summary: This study investigates the decay dynamics of the S-1((1)pi pi*) state of 2-pyridone using femtosecond time-resolved photoelectron imaging technique. It finds that the lifetime of the vibrational states strongly depends on the vibrational energy and mode, and observes a quantum beat between the two lowest energy vibrational states.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Excited-State Switching in Rhenium(I) Bipyridyl Complexes with Donor-Donor and Donor-Acceptor Substituents

Joshua J. Sutton, Dan Preston, Philipp Traber, Johannes Steinmetzer, Xue Wu, Surajit Kayal, Xue-Z Sun, James D. Crowley, Michael W. George, Stephan Kupfer, Keith C. Gordon

Summary: The optical properties of two Re(CO)(3)(bpy)Cl complexes with different substituents were studied, revealing distinct charge transfer bands in their absorption spectra and two emissive states in their excited-state spectroscopy which are modulated by solvent. Time-resolved infrared spectroscopy identified the nature of the excited states in different solvents, with DFT calculations suggesting that the switching of properties induced by solvent is controlled by spin-orbit coupling.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Solid-State Fluorescence of Excited-State Cation-Anion Intermolecular Proton Transfer in 2-(2-Hydroxypyridyl)benzothiazole

Keigo Takahashi, Kohei Sambe, Yotaro Kasahara, Takashi Takeda, Norihisa Hoshino, Ken-ichi Sakai, Tomoyuki Akutagawa

Summary: This study introduces a pyridyl unit to modify the excited-state intramolecular proton transfer (ESIPT) of 2-(2-hydroxyphenyl)benzothiazole fluorescent molecule, and investigates the formation and properties of different structures in various solutions.

ADVANCED OPTICAL MATERIALS (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Rotational spectrum and interstellar detection of the first torsionally excited state of methylamine

P. Gyawali, R. A. Motiyenko, A. Belloche, I. Kleiner, V. V. Ilyushin, E. A. Alekseev, I. Gulaczyk, M. Kreglewski

Summary: This study aims to experimentally and theoretically study the rotational spectra of methylamine in order to provide a reliable basis for the detection of its rotational transitions in the interstellar medium. Accurate spectral predictions were obtained using a new hybrid Hamiltonian model. The detection of methylamine in its first torsionally excited state was reported using the ALMA observatory.

ASTRONOMY & ASTROPHYSICS (2023)

添加到收藏夹

Article Chemistry, Physical

Auger Processes and Excited State Dynamics in WS2/Graphene Heterostructures: A First-Principles Perspective

Junyi Liu, Xu Zhang, Gang Lu

Summary: In this work, the excited state dynamics in a WS2/graphene heterostructure are investigated through first-principles calculations, providing insights into the charge and energy transfer mechanisms. It is found that charge transfer is primarily driven by interlayer Auger-like processes due to strong electron-hole interactions, rather than direct interlayer excitations. The electron-phonon coupling is unable to compete with Auger processes due to phonon bottleneck. Additionally, the asymmetrical dynamics are attributed to the difference in density of states of the heterostructure.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

添加到收藏夹

Article Chemistry, Physical

The 2-pyridone/2-hydroxypyridine tautomerism in gas phase: An excited state roaming reaction

Marta Queizan, Sara Gil-Guerrero, Alvaro Perez-Barcia, Jose M. Hermida-Ramon

Summary: Multiconfigurational methods were used to analyze the mechanism of gas-phase phototautomerization of 2-pyridone/2-hydroxypyridine. The results show that tautomerization only occurs after electronic excitation to S1 state, followed by a conical intersection and a roaming process for hydrogen atom migration. The findings provide new insights into the photophysics and photochemistry of a prebiotic model found in interstellar clouds.

JOURNAL OF CHEMICAL PHYSICS (2023)

添加到收藏夹

Article Materials Science, Multidisciplinary

Measurement of recombination mechanisms in mid-infrared W-superlattices

C. L. Bogh, A. J. Muhowski, M. D. Nelson, V. G. J. Rodgers, J. P. Prineas

Summary: Mid-wave infrared LEDs based on 6.1 angstrom III/V semiconductors have lower efficiency compared to visible LEDs due to low internal quantum efficiency. Recent research has identified a W-superlattice based on 6.1 angstrom III/V semiconductors with remarkably high IQE at both low and room temperatures. In this work, two-color pump-probe, differential transmission measurements were conducted to study the physical mechanisms of this superlattice.

OPTICAL MATERIALS EXPRESS (2022)

添加到收藏夹

Article Astronomy & Astrophysics

Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer

B. Le Crom, M. Assie, Y. Blumenfeld, J. Guillot, H. Sagawa, T. Suzuki, M. Honma, N. L. Achouri, B. Bastin, R. Borcea, W. N. Catford, E. Clement, L. Caceres, M. Caamano, A. Corsi, G. De France, F. Delaunay, N. De Sereville, B. Fernandez-Dominguez, M. Fisichella, S. Franchoo, A. Georgiadou, J. Gibelin, A. Gillibert, F. Hammache, O. Kamalou, A. Knapton, V Lapoux, S. Leblond, A. O. Macchiavelli, F. M. Marques, A. Matta, L. Menager, P. Morfouace, N. A. Orr, J. Pancin, X. Pereira-Lopez, L. Perrot, J. Piot, E. Pollacco, D. Ramos, T. Roger, F. Rotaru, A. M. Sanchez-Benitez, M. Senoville, O. Sorlin, M. Stanoiu, I Stefan, C. Stodel, D. Suzuki, J-C Thomas, M. Vandebrouck

Summary: The isovector and isoscalar components of neutron-proton pairing in the fp-shell of N=Z unstable nuclei were investigated using the (p, He-3) two-nucleon transfer reaction. By combining particle and gamma-ray detection with radioactive beams, the study was carried out for the first time in both closed and open-shell nuclei in the fp-shell. The results suggest the presence of a superfluid phase in the isovector channel based on the enhanced ground-state to ground-state pair transfer cross-section in Fe-52.

PHYSICS LETTERS B (2022)

添加到收藏夹

Article International Relations

Evidence of the unthinkable: Experimental wargaming at the nuclear threshold

Andrew W. Reddie, Bethany L. Goldblum

Summary: This article introduces an experimental wargaming platform to quantify the effect of tailored nuclear capabilities on the nuclear threshold. The study finds that the presence of tailored nuclear capabilities increases the likelihood of conflict escalation, but this trend diminishes in the wargaming context.

JOURNAL OF PEACE RESEARCH (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Unbound states in 17C and p-sd shell-model interactions

S. Kim, J. W. Hwang, Y. Satou, N. A. Orr, T. Nakamura, Y. Kondo, J. GIbelin, N. L. Achouri, T. Aumann, H. Baba, F. Delaunay, P. Doornenbal, N. Fukuda, N. Inabe, T. Isobe, D. Kameda, D. Kanno, N. Kobayashi, T. Kubo, S. Leblond, J. Lee, F. M. Marques, R. Minakata, T. Motobayashi, D. Murai, T. Murakami, K. Muto, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S. Ogoshi, H. Otsu, H. Satoh, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, A. G. Tuff, M. Vandebrouck, K. Yoneda

Summary: Unbound states in 17C were studied by removing one neutron from an 18C beam at an energy of 245 MeV/nucleon on a carbon target. The energy spectrum of 17C above the single-neutron decay threshold was reconstructed using invariant mass spectroscopy, revealing resonances at 0.52(2), 0.77(2), 1.36(1), 1.91(1), 2.22(3), and 3.20(1) MeV. Through comparisons with calculations, the resonance at 0.77(2) MeV was tentatively assigned as the second 5/2+ state, while the resonances at 1.91(1) and 3.20(1) MeV were identified as p-shell hole states with spin-parities 1/2-1 and 3/2-1, respectively. A YSOX shell-model Hamiltonian based on the monopole-based universal interaction provided a good description of the results.

PHYSICS LETTERS B (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Level structures of 56,58Ca cast doubt on a doubly magic 60Ca

S. Chen, F. Browne, P. Doornenbal, J. Lee, A. Obertelli, Y. Tsunoda, T. Otsuka, Y. Chazono, G. Hagen, J. D. Holt, G. R. Jansen, K. Ogata, N. Shimizu, Y. Utsuno, K. Yoshida, N. L. Achouri, H. Baba, D. Calvet, F. Chateau, N. Chiga, A. Corsi, M. L. Cortes, A. Delbart, J. -M. Gheller, A. Giganon, A. Gillibert, C. Hilaire, T. Isobe, T. Kobayashi, Y. Kubota, V. Lapoux, H. N. Liu, T. Motobayashi, I. Murray, H. Otsu, V. Panin, N. Paul, W. Rodriguez, H. Sakurai, M. Sasano, D. Steppenbeck, L. Stuhl, Y. L. Sun, Y. Togano, T. Uesaka, K. Wimmer, K. Yoneda, O. Aktas, T. Aumann, L. X. Chung, F. Flavigny, S. Franchoo, I. Gasparic, R. -B. Gerst, J. Gibelin, K. I. Hahn, D. Kim, T. Koiwai, Y. Kondo, P. Koseoglou, C. Lehr, B. D. Linh, T. Lokotko, M. MacCormick, K. Moschner, T. Nakamura, S. Y. Park, D. Rossi, E. Sahin, P. -A. Soderstrom, D. Sohler, S. Takeuchi, H. Tornqvist, V. Vaquero, V. Wagner, S. Wang, V. Werner, X. Xu, H. Yamada, D. Yan, Z. Yang, M. Yasuda, L. Zanetti

Summary: Gamma decays in Ca-56 and Ca-58 were observed following quasi-free one-proton knockout reactions. The transitions were tentatively assigned as the 2(1)(+) -> 0(gs)(+) decays and compared to results from ab initio and conventional shell-model approaches. A new nuclear shell above the N=34 shell was confirmed, indicating a potential extension of the dripline of Ca isotopes.

PHYSICS LETTERS B (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Searching for universality of dineutron correlation at the surface of Borromean nuclei

A. Corsi, Y. Kubota, J. Casal, M. Gomez-Ramos, A. M. Moro, G. Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. M. Gheller, J. Gibelin, A. Giganon, A. Gillibert, K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo, Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, F. M. Marques, T. Motobayashi, T. Miyazaki, T. Nakamura, N. Nakatsuka, Y. Nishio, A. Obertelli, A. Ohkura, N. A. Orr, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, E. C. Pollacco, S. Reichert, J. Y. Rousse, A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata, Y. Shimizu, Y. Shindoo, L. Stuhl, T. Sumikama, Y. L. Sun, M. Tabata, Y. Togano, J. Tsubota, T. Uesaka, Z. H. Yang, J. Yasuda, K. Yoneda, J. Zenihiro

Summary: The dineutron correlation was studied in three different Borromean nuclei near the neutron dripline. The correlation angle between valence neutrons was found to be largest in the same range of intrinsic momenta, which suggests a connection to the nuclear surface. This result reinforces the prediction of universal dineutron formation in environments with low neutron density, such as the surface of neutron-rich Borromean nuclei.

PHYSICS LETTERS B (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Intruder configurations in Ne-29 at the transition into the island of inversion: Detailed structure study of Ne-28

H. Wang, M. Yasuda, Y. Kondo, T. Nakamura, J. A. Tostevin, K. Ogata, T. Otsuka, A. Poves, N. Shimizu, K. Yoshida, N. L. Achouri, H. Al Falou, L. Atar, T. Aumann, H. Baba, K. Boretzky, C. Caesar, D. Calvet, H. Chae, N. Chiga, A. Corsi, H. L. Crawford, F. Delaunay, A. Delbart, Q. Deshayes, Z. Dombradi, C. Douma, Z. Elekes, P. Fallon, I. Gasparic, J. M. Gheller, J. Gibelin, A. Gillibert, M. N. Harakeh, A. Hirayama, C. R. Hoffman, M. Holl, A. Horvat, A. Horvath, J. W. Hwang, T. Isobe, J. Kahlbow, N. Kalantar-Nayestanaki, S. Kawase, S. Kim, K. Kisamori, T. Kobayashi, D. Koerper, S. Koyama, I. Kuti, V. Lapoux, S. Lindberg, F. M. Marques, S. Masuoka, J. Mayer, K. Miki, T. Murakami, M. A. Najafi, K. Nakano, N. Nakatsuka, T. Nilsson, A. Obertelli, N. A. Orr, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, A. Revel, D. Rossi, A. T. Saito, T. Saito, M. Sasano, H. Sato, Y. Satou, H. Scheit, F. Schindler, P. Schrock, M. Shikata, Y. Shimizu, H. Simon, D. Sohler, O. Sorlin, L. Stuhl, S. Takeuchi, M. Tanaka, M. Thoennessen, H. Toernqvist, Y. Togano, T. Tomai, J. Tscheuschner, J. Tsubota, T. Uesaka, Z. Yang, K. Yoneda

Summary: In this study, detailed ?-ray spectroscopy of the Ne-28 isotope was performed for the first time using the one-neutron removal reaction from 29Ne. Based on an analysis of momentum distributions, a level scheme with spin-parity assignments was constructed for Ne-28 and the negative-parity states were identified for the first time. The results indicate a breakdown of the N = 20 and N = 28 shell gaps, presenting a challenge for theoretical description of the transition in the Ne isotopic chain.

PHYSICS LETTERS B (2023)

添加到收藏夹

Article Physics, Nuclear

Extracting model-independent nuclear level densities away from stability

D. Mucher, A. Spyrou, M. Wiedeking, M. Guttormsen, A. C. Larsen, F. Zeiser, C. Harris, A. L. Richard, M. K. Smith, A. Gorgen, S. N. Liddick, S. Siem, H. C. Berg, J. A. Clark, P. A. DeYoung, A. C. Dombos, B. Greaves, L. Hicks, R. Kelmar, S. Lyons, J. Owens-Fryar, A. Palmisano, D. Santiago-Gonzalez, G. Savard, W. W. Von Seeger

Summary: In this study, a new experimental method combining the shape method and the beta-Oslo technique is developed to measure the nuclear level density (NLD) of short-lived nuclei. The results show a fivefold increase in the NLD for the Kr-88 nucleus compared to theoretical values, with significant implications in astrophysics and other applications.

PHYSICAL REVIEW C (2023)

添加到收藏夹

Article Physics, Multidisciplinary

On the Experimental Description of Neutron Resonances

Julien Gibelin

Summary: We provide a set of simple derivations for neutron-induced resonance cross-sections, which are commonly used to experimentally describe the fundamental properties of resonances for neutron-rich nuclei far from stability and unbound nuclei. The main purpose of this article is to illustrate the dependencies of these formulae on basic observables and discuss the relevance of experimental approaches in deriving their properties, particularly for N-body resonances.

FEW-BODY SYSTEMS (2023)

添加到收藏夹

Article Physics, Nuclear

Isoscalar giant monopole strength in 58Ni, 90Zr, 120Sn, and 208Pb

A. Bahini, R. Neveling, P. von Neumann-Cosel, J. Carter, I. T. Usman, P. Adsley, N. Botha, J. W. Brummer, L. M. Donaldson, S. Jongile, T. C. Khumalo, M. B. Latif, K. C. W. Li, P. Z. Mabika, P. T. Molema, C. S. Moodley, S. D. Olorunfunmi, P. Papka, L. Pellegri, B. Rebeiro, E. Sideras-Haddad, F. D. Smit, S. Triambak, M. Wiedeking, J. J. van Zyl

Summary: An independent investigation of the isoscalar giant monopole (IS0) strength distributions in nuclei was performed using the 0 degrees facility at iThemba Laboratory for Accelerator Based Sciences (iThemba LABS), South Africa to understand differences observed in previous experiments. The results showed structural differences in the IS0 strength distributions of 90Zr and 208Pb, which may affect the determination of nuclear matter incompressibility based on the IS0 centroid energies of these two nuclei.

PHYSICAL REVIEW C (2023)

添加到收藏夹

Article Physics, Particles & Fields

Measurement of proton light yield of water-based liquid scintillator

E. J. Callaghan, B. L. Goldblum, J. A. Brown, T. A. Laplace, J. J. Manfredi, M. Yeh, G. D. Orebi Gann

Summary: This study presents the first measurement of the proton light yield of a water-based liquid scintillator (WbLS) and a pure LAB + 2 g/L 2,5-diphenyloxazole (PPO) mixture (LABPPO). The proton light yields were measured using a double time-of-flight method and a pulsed neutron beam. The results show that the proton light yield of WbLS is approximately 3.8% lower than that of LABPPO, which itself exhibits a relative proton light yield 15-20% higher than previous measurements of a similar sample.

EUROPEAN PHYSICAL JOURNAL C (2023)

添加到收藏夹

Article Physics, Nuclear

Chirality and octupole correlations in 74As

X. Xiao, S. Y. Wang, C. Liu, R. A. Bark, J. Meng, S. Q. Zhang, B. Qi, H. Hua, P. Jones, S. M. Wyngaardt, S. Wang, D. P. Sun, Z. Q. Li, N. B. Zhang, H. Jia, R. J. Guo, X. C. Han, L. Mu, X. Lu, W. Z. Xu, C. Y. Niu, C. G. Wang, E. A. Lawrie, J. J. Lawrie, J. F. Sharpey-Schafer, M. Wiedeking, S. N. T. Majola, T. D. Bucher, T. Dinoko, B. Maqabuka, L. Makhathini, L. Mdletshe, N. A. Khumalo, O. Shirinda, K. Sowazi

Summary: High-spin states in As-74 were studied and two positive-parity and one negative-parity bands were identified. The positive-parity bands are interpreted as chiral doublet bands, and octupole correlations in As-74 were observed.

PHYSICAL REVIEW C (2022)

添加到收藏夹

Article Operations Research & Management Science

Experimental Wargaming with SIGNAL

Joshua Letchford, Laura Epifanovskaya, Kiran Lakkaraju, Mika Armenta, Andrew Reddie, Bethany L. Goldblum, Jon Whetzel, Jason Reinhardt, Vamshi Balanaga, Andrew Chen, Nathan Fabian, Sheryl Hingorani, Roshni Iyer, Roshan Krishnan, Sarah Laderman, Manseok Lee, Janani Mohan, Michael Nacht, Soravis Prakkamaku, Matthew Sumner, Jake Tibbetts, Allie Valdez, Charlie Zhang

Summary: Wargames are a valuable tool in military and strategic research, but traditional approaches may lack rigorous data collection. Experimental wargaming, such as the SIGNAL game, combines experimental design principles to explore fundamental research questions about human behavior in conflict scenarios. SIGNAL has been played hundreds of times by thousands of players, creating a substantial database for academic purposes.

MILITARY OPERATIONS RESEARCH (2022)

添加到收藏夹

Article Physics, Nuclear

Nuclear level density and γ-ray strength function of 63Ni

V. W. Ingeberg, P. Jones, L. Msebi, S. Siem, M. Wiedeking, A. A. Avaa, M. V. Chisapi, E. A. Lawrie, K. L. Malatji, L. Makhathini, S. P. Noncolela, O. Shirinda

Summary: This study investigates the nuclear level density (NLD) and gamma-ray strength function (gamma SF) of 63Ni using the Oslo method. The results are compared with previous measurements and neutron resonance spacing. The study finds a strong low-energy enhancement in the gamma SF, which can be explained by M1 strength based on large-scale shell model calculations. Additionally, systematic changes in the strength below 5 MeV are observed with increasing mass in various Ni isotopes.

PHYSICAL REVIEW C (2022)

添加到收藏夹

Article Physics, Nuclear

Silicon tracker array for RIB experiments at SAMURAI

A. Stefanescu, V Panin, L. Trache, T. Motobayashi, H. Otsu, A. Saastamoinen, T. Uesaka, L. Stuhl, J. Tanaka, D. Tudor, I. C. Stefanescu, A. E. Spiridon, K. Yoneda, H. Baba, M. Kurokawa, Y. Togano, Z. Halasz, M. Sasano, S. Ota, Y. Kubota, D. S. Ahn, T. Kobayashi, Z. Elekes, N. Fukuda, H. Takeda, D. Kim, E. Takada, H. Suzuki, K. Yoshida, Y. Shimizu, H. N. Liu, Y. L. Sun, T. Isobe, J. Gibelin, P. J. Li, J. Zenihiro, F. M. Marques, M. N. Harakeh, G. G. Kiss, A. Kurihara, M. Yasuda, T. Nakamura, S. Park, Z. Yang, T. Harada, M. Nishimura, H. Sato, I. S. Hahn, K. Y. Chae, J. M. Elson, L. G. Sobotka, C. A. Bertulani

Summary: This work describes the development of a silicon tracker system for experiments with proton-rich radioactive ion beams at the SAMURAI superconducting spectrometer of RIBF at RIKEN. The system is designed for accurate angular reconstruction and atomic number identification of relativistic heavy ions and protons, and has shown good performance in two pilot experiments. The physics justification for such a system is also presented.

EUROPEAN PHYSICAL JOURNAL A (2022)

添加到收藏夹

Article Physics, Nuclear

Border of the island of inversion: Unbound states in 29Ne

M. Holl, S. Lindberg, A. Heinz, Y. Kondo, T. Nakamura, J. A. Tostevin, H. Wang, T. Nilsson, N. L. Achouri, H. Al Falou, L. Atar, T. Aumann, H. Baba, K. Boretzky, C. Caesar, D. Calvet, H. Chae, N. Chiga, A. Corsi, H. L. Crawford, F. Delaunay, A. Delbart, Q. Deshayes, P. Diaz Fernandez, Z. Dombradi, C. A. Douma, Z. Elekes, P. Fallon, I Gasparic, J-M Gheller, J. Gibelin, A. Gillibert, M. N. Harakeh, A. Hirayama, C. R. Hoffman, A. Horvat, A. Horvath, J. W. Hwang, T. Isobe, J. Kahlbow, N. Kalantar-Nayestanaki, S. Kawase, S. Kim, K. Kisamori, T. Kobayashi, D. Koerper, S. Koyama, I Kuti, V Lapoux, F. M. Marques, S. Masuoka, J. Mayer, K. Miki, T. Murakami, M. Najafi, K. Nakano, N. Nakatsuka, A. Obertelli, F. de Oliveira Santos, N. A. Orr, H. Otsu, T. Ozaki, V Panin, S. Paschalis, A. Revel, D. Rossi, A. T. Saito, T. Y. Saito, M. Sasano, H. Sato, Y. Satou, H. Scheit, F. Schindler, P. Schrock, M. Shikata, Y. Shimizu, H. Simon, D. Sohler, O. Sorlin, L. Stuhl, S. Takeuchi, M. Tanaka, M. Thoennessen, H. Toernqvist, Y. Togano, T. Tomai, J. Tscheuschner, J. Tsubota, T. Uesaka, Z. Yang, M. Yasuda, K. Yoneda

Summary: In this study, the unbound states of Ne-29 were investigated for the first time. Through analyzing resonance properties, partial cross sections, and momentum distributions, some important conclusions were drawn, including the first evidence for f(7/2) single particle strength in Ne-29.

PHYSICAL REVIEW C (2022)

添加到收藏夹

暂无数据

© Peeref 2019-2024. All rights reserved.