Review
Chemistry, Multidisciplinary
Tao Yao, Linlin Cao, Xiaokang Liu, Xinyi Shen, Dan Wu
Summary: This article emphasizes the substantial achievements in cutting-edge in situ X-ray spectroscopy techniques, presenting representative carbon-neutral electrocatalytic examples to showcase the principles and virtues of identifying active sites and tracing intermediate species. In the water splitting reaction, interactions between active sites and support, as well as the adsorption behaviors of intermediates, are considered important factors governing performance. Additionally, the structural rearrangement of alloy catalysts driven by cathodic potential significantly influences the activity and selectivity towards ECR.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Review
Biochemistry & Molecular Biology
Sheng Zhang, Ming Bao, Mieko Arisawa, Masahiko Yamaguchi
Summary: In this article, the effect of triangle temperature oscillations on reversible nonequilibrium chemical reactions is described. The concentration oscillations exhibit diverse nonequilibrium phenomena, including equilibrium intersecting, equilibrium noncontact, and equilibrium sliding, when self-catalytic reactions are involved. Both stable and unstable concentration oscillations occur, and they are classified based on the waveforms in concentration/time profiles, hysteresis curves in concentration/temperature profiles, nature of self-catalytic reactions, and their relationships with equilibrium. Experimental examples using reversible association and dissociation reactions of helicene oligomers are shown.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physics, Nuclear
A. Sen, T. K. Ghosh, E. M. Kozulin, I. M. Itkis, G. N. Knyazheva, K. Novikov, S. Bhattacharya, K. Banerjee, C. Bhattacharya
Summary: This study explores the influence of various entrance channel parameters on the dynamics of quasifission. It is found that the entrance channel isospin difference affects the quasifission dynamics, with a higher isospin difference leading to a longer evolution time and a shallower potential pocket.
Review
Instruments & Instrumentation
Rohan S. Dassanayake, Niwanthi Dissanayake, Juan S. Fierro, Noureddine Abidi, Edward L. Quitevis, Kiran Boggavarappu, Vidura D. Thalangamaarachchige
Summary: Cellulose nanocrystals (CNCs) have gained significant attention due to their wide range of applications. This review focuses on the characterization of CNCs and CNCs-derived materials using spectroscopic techniques such as solid-state nuclear magnetic resonance (NMR) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron (XPS) spectroscopy, and Raman spectroscopy.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Review
Chemistry, Analytical
A. Silge, Karina Weber, D. Cialla-May, L. Mueller-Boetticher, D. Fischer, J. Popp
Summary: The application of Raman spectroscopic methods in life science has made significant progress, driven by advances in instrumentation, miniaturization, and interdisciplinary dialogue. These advancements have brought new possibilities for optical sensing and chemical imaging, contributing to advanced pharmaceutical development and manufacturing. Raman sensing, with its non-destructive and label-free quality testing capabilities, is particularly valuable for process-related aspects in bioprocessing. Additionally, the trend towards personalized medicine has increased the demand for individually tailored medicines, manufactured in public pharmacies.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
P. A. Butler
Summary: This article introduces the application and improvement methods of helical-orbit solenoidal spectrometers, and proposes the use of an active gas target to enhance the performance of the spectrometer.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Chemistry, Physical
Simon De Kreijger, Martin Gillard, Benjamin Elias, Ludovic Troian-Gautier
Summary: The rapid development of photo(redox) catalysis has provided a credible alternative to thermal processes in organic chemistry. This concept article focuses on spectroscopic techniques used in light-induced transformations and photoredox catalysis applications, providing a theoretical background and selected examples from the literature.
Article
Physics, Nuclear
M. Tanaka, M. Takechi, A. Homma, A. Prochazka, M. Fukuda, D. Nishimura, T. Suzuki, T. Moriguchi, D. S. Ahn, A. Aimaganbetov, M. Amano, H. Arakawa, S. Bagchi, K-H Behr, N. Burtebayev, K. Chikaato, H. Du, T. Fujii, N. Fukuda, H. Geissel, T. Hori, S. Hoshino, R. Igosawa, A. Ikeda, N. Inabe, K. Inomata, K. Itahashi, T. Izumikawa, D. Kamioka, N. Kanda, I Kato, I Kenzhina, Z. Korkulu, Y. Kuk, K. Kusaka, K. Matsuta, M. Mihara, E. Miyata, D. Nagae, S. Nakamura, M. Nassurlla, K. Nishimuro, K. Nishizuka, K. Ohnishi, M. Ohtake, T. Ohtsubo, S. Omika, H. J. Ong, A. Ozawa, H. Sakurai, C. Scheidenberger, Y. Shimizu, T. Sugihara, T. Sumikama, H. Suzuki, S. Suzuki, H. Takeda, Y. Tanaka, Y. K. Tanaka, I Tanihata, T. Wada, K. Wakayama, S. Yagi, T. Yamaguchi, R. Yanagihara, Y. Yanagisawa, K. Yoshida, T. K. Zholdybayev
Summary: Charge-changing cross sections sigma(CC) for Ca42-51 on a carbon target at around 280 MeV/nucleon have been measured. The measured sigma(CC) data show a significant decrease, contrary to the expectations, which is attributed to the charged-particle evaporation effect induced by the neutron-removal reaction. By taking the evaporation effect into account, the sigma(CC) data sets for nuclides from C to Fe isotopes on C-12 measured at around 280 MeV/nucleon can be successfully reproduced, with a standard deviation of 1.6%. Furthermore, it is found that the evaporation effect becomes negligible in the neutron-rich region, and the sigma(CC) data for neutron-rich Ca isotopes (A >= 51) are highly sensitive to the point-proton radius r(p), allowing for potential determination of r(p) for very neutron-rich nuclei.
Article
Agriculture, Dairy & Animal Science
Chen Guan, Shaoqing Bing, Xiaotong Yang, Ruichi Guo, Ying Chen, Honghua Xu, Guoping Yu
Summary: The addition of homogeneous nuclei (HN) or secondary nuclei (SN) alters the kinetics and thermodynamics of fibrillation by reducing the nucleation energy barrier and lag time. Monitoring the formation and depletion of HN during fibril formation revealed that both SN-induced fibrils and HN-induced fibrils follow the same nucleated growth pathway as spontaneously formed fibrils.
JOURNAL OF DAIRY SCIENCE
(2022)
Review
Nanoscience & Nanotechnology
Li Gao, Yurui Qu, Lianhui Wang, Zongfu Yu
Summary: This article introduces a new type of spectrometer that relies on computational technique for spectral information recovery. It differs from conventional optical spectrometers and is well suited for low-cost, miniaturized, and application-specific requirements. The article reviews the recent progress in computational spectrometers and identifies future directions for development.
Article
Chemistry, Organic
Alexandre Quelhas, Houda Gazzeh, Thierry Roisnel, Yann Trolez, Jean-Claude Guillemin
Summary: Kinetically unstable vinyl, allenyl and propargyl isocyanides react faster in Passerini and Ugi reactions than they decompose, leading to functionalized amides that can be further used in reactions involving unsaturated substituents.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Physics, Nuclear
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.
Article
Biochemistry & Molecular Biology
Ioana Andreea Brezestean, Ana Maria Raluca Gherman, Alia Colnita, Nicoleta Elena Dina, Csilla Muller Molnar, Daniel Marconi, Vasile Chis, Ioan-Leontin David, Simona Cinta-Pinzaru
Summary: The article presents a theoretical characterization of NOD using DFT-vibrational Raman analysis, as well as experimental analysis using the drop-coating deposition Raman technique. Different methods were used for the SERS analysis of NOD, with the most promising results obtained using AgNPs and the Klarite (TM) substrate, which provided the lowest limits of detection. The theoretical computation of NOD's complex vibrational modes was used for the first time to unambiguously assign specific Raman bands.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Selina Schneider, Carsten von Haenisch
Summary: The compound (Dipp(2)NacNac)Ga was utilized as a trapping reagent for unstable compounds tBuSbH(2) and MeBiH2, resulting in the formation of (Dipp(2)NacNac)GaH(SbHtBu) (1) and {(Dipp(2)NacNac)GaH(BiMe)}(2) (2). Furthermore, reactions with alkylated or arylated dichloro-bismuthenes led to bridged species or dibismuthane formation.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Md. Abdur Razzak, Shin Sik Choi
Summary: The interaction between ovalbumin (OVA) and isoflavonoid glabridin (GB) was studied through spectroscopic and molecular docking techniques. GB was found to bind to OVA mainly through hydrogen bonding and hydrophobic forces, leading to changes in OVA's secondary structure. Molecular docking simulations supported the experimental findings. Additionally, the GB-OVA complex increased the aqueous solubility of GB.
Article
Physics, Multidisciplinary
K. Inaba, Y. Sasamoto, T. Kawabata, M. Fujiwara, Y. Funaki, K. Hatanaka, K. Itoh, M. Itoh, K. Kawase, H. Matsubara, Y. Maeda, K. Suda, S. Sakaguchi, Y. Shimizu, A. Tamii, Y. Tameshige, M. Uchida, T. Uesaka, T. Yamada, H. P. Yoshida
Summary: The study suggests the possible existence of an alpha condensed state in C-13, with potential candidates including the 1/2(-) state around E-x = 12.5 MeV and the 1/2(+) or 3/2(+) states at E-x = 16.1 MeV. Further experimental information is needed to confirm this conclusion.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
R. Nakamoto, M. Ito, A. Saito, S. Shimoura
Summary: A new formula for describing the non-resonant background strength in binary breakup, based on the Migdal-Watson (MW) formula, is proposed in this study. The strength of the direct breakup is evaluated using the complex scaling method (CSM) and the extended MW formula nicely reproduces the calculated strength. The relation between the newly introduced parameters in the extended MW formula and the spatial size of the initial wave function is also discussed.
Article
Astronomy & Astrophysics
H. Watanabe, C. X. Yuan, G. Lorusso, S. Nishimura, Z. Y. Xu, T. Sumikama, P-A Soderstrom, P. Doornenbal, F. Browne, G. Gey, H. S. Jung, J. Taprogge, Zs Vajta, H. K. Wang, J. Wu, A. Yagi, H. Baba, G. Benzoni, K. Y. Chae, F. C. L. Crespi, N. Fukuda, R. Gernhauser, N. Inabe, T. Isobe, A. Jungclaus, D. Kameda, G. D. Kim, Y. K. Kim, I Kojouharov, F. G. Kondev, T. Kubo, N. Kurz, Y. K. Kwon, G. J. Lane, Z. Li, C-B Moon, A. Montaner-Piza, K. Moschner, F. Naqvi, M. Niikura, H. Nishibata, D. Nishimura, A. Odahara, R. Orlandi, Z. Patel, Zs Podolyak, H. Sakurai, H. Schaffner, G. S. Simpson, K. Steiger, H. Suzuki, H. Takeda, A. Wendt, K. Yoshinaga
Summary: This study investigates the impact of nuclear shell evolution on Gamow-Teller transitions, focusing on the experimental data of a long-lived isomer in Ag-127, which decays through internal transitions competing with high-spin states in Cd-127. The strong GT transition from the Ag-127 isomer is discussed in terms of configuration-dependent optimization of effective single-particle energies.
Article
Physics, Multidisciplinary
H. F. Li, S. Naimi, T. M. Sprouse, M. R. Mumpower, Y. Abe, Y. Yamaguchi, D. Nagae, F. Suzaki, M. Wakasugi, H. Arakawa, W. B. Dou, D. Hamakawa, S. Hosoi, Y. Inada, D. Kajiki, T. Kobayashi, M. Sakaue, Y. Yokoda, T. Yamaguchi, R. Kagesawa, D. Kamioka, T. Moriguchi, M. Mukai, A. Ozawa, S. Ota, N. Kitamura, S. Masuoka, S. Michimasa, H. Baba, N. Fukuda, Y. Shimizu, H. Suzuki, H. Takeda, D. S. Ahn, M. Wang, C. Y. Fu, Q. Wang, S. Suzuki, Z. Ge, Yu. A. Litvinov, G. Lorusso, P. M. Walker, Zs. Podolyak, T. Uesaka
Summary: The Rare-RI Ring (R3) is a newly commissioned mass spectrometer at the Radioactive Isotope Beam Factory (RIBF) in RIKEN, dedicated to measuring the mass of exotic nuclei far from stability. The first application of the R3 mass spectrometer at RIBF is reported, where masses of several rare isotopes were measured with improved uncertainty. This new technique of individual injection of preidentified rare nuclei is essential for future mass measurements of the rarest isotopes produced at RIBF. The impact of a new measurement on the solar r-process abundances is also discussed.
PHYSICAL REVIEW LETTERS
(2022)
Article
Instruments & Instrumentation
G. P. A. Berg, J. A. Frenje, J. H. Kunimune, C. A. Trosseille, M. Couder, J. D. Kilkenny, A. J. Mackinnon, A. S. Moore, C. S. Waltz, M. C. Wiescher
Summary: A new Magnetic Recoil Spectrometer (MRSt) is designed to provide time-resolved measurements of the energy spectrum of neutrons emanating from an inertial confinement fusion implosion at the National Ignition Facility. The high energy resolution capability of 2 keV and the extension to high time resolution of about 20 ps are expected to improve our understanding of conditions required for successful fusion experiments.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Physics, Nuclear
S. A. Miskovich, F. Montes, G. P. A. Berg, J. Blackmon, K. A. Chipps, M. Couder, C. M. Deibel, K. Hermansen, A. A. Hood, R. Jain, T. Ruland, H. Schatz, M. S. Smith, P. Tsintari, L. Wagner
Summary: This study presents the development of an online Bayesian optimization method combined with a Gaussian process model for tuning ion beams in a nuclear astrophysics recoil separator. The method achieves efficient and reproducible tuning results with small angular deviations and is at least three times faster than manual tuning.
PHYSICAL REVIEW ACCELERATORS AND BEAMS
(2022)
Article
Multidisciplinary Sciences
M. Duer, T. Aumann, R. Gernhaeuser, V. Panin, S. Paschalis, D. M. Rossi, N. L. Achouri, D. Ahn, H. Baba, C. A. Bertulani, M. Boehmer, K. Boretzky, C. Caesar, N. Chiga, A. Corsi, D. Cortina-Gil, C. A. Douma, F. Dufter, Z. Elekes, J. Feng, B. Fernandez-Dominguez, U. Forsberg, N. Fukuda, I. Gasparic, Z. Ge, J. M. Gheller, J. Gibelin, A. Gillibert, K. I. Hahn, Z. Halasz, M. N. Harakeh, A. Hirayama, M. Holl, N. Inabe, T. Isobe, J. Kahlbow, N. Kalantar-Nayestanaki, D. Kim, S. Kim, T. Kobayashi, Y. Kondo, D. Koerper, P. Koseoglou, Y. Kubota, I. Kuti, P. J. Li, C. Lehr, S. Lindberg, Y. Liu, F. M. Marques, S. Masuoka, M. Matsumoto, J. Mayer, K. Miki, B. Monteagudo, T. Nakamura, T. Nilsson, A. Obertelli, N. A. Orr, H. Otsu, S. Y. Park, M. Parlog, P. M. Potlog, S. Reichert, A. Revel, A. T. Saito, M. Sasano, H. Scheit, F. Schindler, S. Shimoura, H. Simon, L. Stuhl, H. Suzuki, D. Symochko, H. Takeda, J. Tanaka, Y. Togano, T. Tomai, H. T. Toernqvist, J. Tscheuschner, T. Uesaka, V. Wagner, H. Yamada, B. Yang, L. Yang, Z. H. Yang, M. Yasuda, K. Yoneda, L. Zanetti, J. Zenihiro, M. V. Zhukov
Summary: This article discusses the long-standing question in nuclear physics of whether chargeless nuclear systems can exist. The researchers report on the observation of a resonance-like structure in the four-neutron system, indicating the existence of a quasi-bound tetraneutron state for a very short time. The measured energy and width of this state serve as an important benchmark for understanding the nuclear force.
Article
Astronomy & Astrophysics
A. Vitez-Sveiczer, A. Algora, A. Morales, B. Rubio, G. G. Kiss, P. Sarriguren, P. Van Isacker, G. de Angelis, F. Recchia, S. Nishimura, J. Agramunt, V Guadilla, A. Montaner-Piza, S. E. A. Orrigo, A. Horvath, D. Napoli, S. Lenzi, A. Boso, V. H. Phong, J. Wu, P-A Soderstrom, T. Sumikama, H. Suzuki, H. Takeda, D. S. Ahn, H. Baba, P. Doornebal, N. Fukuda, N. Inabe, T. Isobe, T. Kubo, S. Kubono, H. Sakurai, Y. Shimizu, C. Sidong, B. Blank, P. Ascher, M. Gerbaux, T. Goigoux, J. Giovinazzo, S. Grevy, T. Kurtukian Nieto, C. Magron, W. Gelletly, Zs Dombradi, Y. Fujita, M. Tanaka, P. Aguilera, F. Molina, J. Eberth, F. Diel, D. Lubos, C. Borcea, E. Ganioglu, D. Nishimura, H. Oikawa, Y. Takei, S. Yagi, W. Korten, G. de France, P. Davies, J. Liu, J. Lee, T. Lokotko, I Kojouharov, N. Kurz, H. Shaffner, A. Petrovici
Summary: The beta-decay of the even-even nucleus Kr-70 with Z=N+2 was investigated, and fifteen gamma-rays associated with the beta-decay were identified for the first time. The half-life of Kr-70 and the beta-delayed proton emission probability were determined with increased precision. The study observed an increase in the beta-strength to the yrast 1(+) state, indicating potential increased np correlations in the T=0 channel.
Article
Instruments & Instrumentation
J. H. Kunimune, M. Gatu Johnson, A. S. Moore, C. A. Trosseille, T. M. Johnson, G. P. A. Berg, A. J. Mackinnon, J. D. Kilkenny, J. A. Frenje
Summary: The time-resolving magnetic recoil spectrometer (MRSt) is a diagnostic tool used to measure the time-resolved neutron spectrum in inertial confinement fusion implosions. It utilizes a foil and ion-optical system along with specific detectors to gradually implement and collect data, providing support for further research in the field.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Instruments & Instrumentation
S. Noji, R. G. T. Zegers, G. P. A. Berg, A. M. Amthor, T. Baumann, D. Bazin, E. E. Burkhardt, M. Cortesi, J. C. DeKamp, M. Hausmann, M. Portillo, D. H. Potterveld, B. M. Sherrill, A. Stolz, O. B. Tarasov, R. C. York
Summary: A High Rigidity Spectrometer (HRS) has been designed for experiments at the Facility for Rare-Isotope Beams (FRIB) at Michigan State University (MSU), allowing for the study of exotic neutron-rich isotopes at high beam energies. The HRS consists of a High-Transmission Beamline (HTBL) and a Spectrometer Section, with a maximum magnetic rigidity of 8 Tm.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Physics, Multidisciplinary
D. S. Ahn, J. Amano, H. Baba, N. Fukuda, H. Geissel, N. Inabe, S. Ishikawa, N. Iwasa, T. Komatsubara, T. Kubo, K. Kusaka, D. J. Morrissey, T. Nakamura, M. Ohtake, H. Otsu, T. Sakakibara, H. Sato, B. M. Sherrill, Y. Shimizu, T. Sumikama, H. Suzuki, H. Takeda, O. B. Tarasov, H. Ueno, Y. Yanagisawa, K. Yoshida
Summary: The most neutron-rich sodium nucleus observed so far, 39Na, was discovered at the RIKEN Nishina Center Radioactive Isotope Beam Factory. The study confirms the particle stability of 39Na and provides new key information for understanding nuclear binding and structure under extremely neutron-rich conditions. This discovery has significant implications for nuclear models and theories predicting the neutron dripline and sheds light on the nuclear shell property of 39Na at the neutron number N = 28.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Nuclear
A. Yagi, A. Odahara, H. Nishibata, R. Lozeva, C-B Moon, S. Nishimura, K. Yoshida, N. Yoshinaga, C. Watanabe, K. Higashiyama, T. Shimoda, R. Daido, Y. Fang, P. S. Lee, B. Moon, P. Doornenbal, G. Lorusso, P-A Soderstrom, T. Sumikama, H. Watanabe, T. Isobe, H. Baba, H. Sakurai, F. Browne, Z. Patel, S. Rice, L. Sinclair, J. Wu, Z. Y. Xu, R. Yokoyama, T. Kubo, N. Inabe, H. Suzuki, N. Fukuda, D. Kameda, H. Takeda, D. S. Ahn, Y. Shimizu, D. Murai, F. L. Bello Garrote, J-M Daugas, F. Didierjean, E. Ideguchi, S. Iimura, T. Ishigaki, H. S. Jung, T. Komatsubara, Y. K. Kwon, C. S. Lee, S. Morimoto, M. Niikura, I Nishizuka, K. Tshoo
Summary: The structure of the neutron-rich N = 86 isotope Xe-140 was investigated using beta-gamma spectroscopy, revealing two new beta-decay isomers. Comparisons between experimental results and theoretical calculations were made to discuss the nuclear structures of low-lying states in Xe-140.
Article
Physics, Nuclear
B. Moon, A. Gargano, H. Naidja, C-B Moon, A. Odahara, R. Lozeva, S. Nishimura, C. Yuan, F. Browne, P. Doornenbal, G. Lorusso, Z. Patel, S. Rice, M. Si, L. Sinclair, P-A Soderstrom, T. Sumikama, H. Watanabe, J. Wu, Z. Y. Xu, A. Yagi, D. S. Ahn, H. Baba, F. L. Bello Garrote, R. Daido, J. M. Daugas, F. Didierjean, Y. Fang, N. Fukuda, B. Hong, E. Ideguchi, N. Inabe, T. Ishigaki, T. Isobe, H. S. Jung, D. Kameda, I Kojouharov, T. Komatsubara, T. Kubo, Y. K. Kwon, C. S. Lee, P. Lee, S. Morimoto, D. Murai, M. Niikura, H. Nishibata, I Nishizuka, H. Sakurai, Y. Shimizu, H. Suzuki, H. Takeda, K. Tshoo, R. Yokoyama
Summary: The beta decay scheme of Te-138 and the level structure of I-138 have been reported for the first time. The experiment revealed new spin and parity assignments for I-138 based on the beta decay of Te-138. Calculation based on shell-model theory was used to discuss the proton-neutron interactions and Gamow-Teller transition strength in I-138.
Article
Physics, Nuclear
W. Horiuchi, T. Inakura, S. Michimasa
Summary: In this study, a systematic analysis of nuclear deformation was conducted for neutron-rich Ti, Cr, and Fe isotopes to explore the nuclear structure in the island of inversion near N = 40. It was found that the occupation of highly elongated intruder orbits induced large quadrupole deformation and large hexadecapole deformation in the island of inversion. The study also proposed a method to determine the edge of the island of inversion by measuring the enhancement of the total reaction cross section at high incident energy and discussed the possibility of constraining the hexadecapole deformation using total reaction cross sections.
Article
Physics, Nuclear
S. Go, E. Ideguchi, R. Yokoyama, N. Aoi, F. Azaiez, K. Furutaka, Y. Hatsukawa, A. Kimura, K. Kisamori, M. Kobayashi, F. Kitatani, M. Koizumi, H. Harada, I Matea, S. Michimasa, H. Miya, S. Nakamura, M. Niikura, H. Nishibata, N. Shimizu, S. Shimoura, T. Shizuma, M. Sugawara, D. Suzuki, M. Takaki, Y. Toh, Y. Utsuno, D. Verney, A. Yagi
Summary: Excited states in S-35 were investigated using in-beam gamma-ray spectroscopy with the Mg-26 (O-18, 2 alpha ln) fusion-evaporation reaction. Level structure up to 12.47 MeV was obtained and compared with large-scale shell-model calculations, discussing the possibility of isoscalar-pair excited states with J = (17/2).
Article
Instruments & Instrumentation
Taisei Hayashi, Kensei Ichiba, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Cr-doped Mg4Ta2O9 single crystals with different doping levels were synthesized using the floating zone method, and their photoluminescence and scintillation properties were evaluated. The results showed that Cr-doped Mg4Ta2O9 single crystals exhibited broad emission bands in the near-infrared region and showed scintillation characteristics within specific wavelength ranges. Additionally, the samples with different Cr doping levels demonstrated different lower detection limits based on the dose rate response function.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. Marouf, A. C. Chami, Y. Boudouma
Summary: This study develops a Monte Carlo simulation approach to describe proton-induced secondary electron emission in solids. Theoretical modeling based on the Mott's elastic scattering cross-section and Lindhard's dielectric function was used to calculate the double differential cross-section (DDCS) of excited electrons and describe electron transport in the medium. The results for aluminum show the angular and energy distributions of backscattered electrons for incident protons with energy below 25 keV at normal incidence, and the total electron emission yield also agrees well with available measurements.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Weipeng Yan, Baojun Duan, Zijian Zhu, Yan Song, Guzhou Song, Jiming Ma, Binkang Li, Yucheng Liu
Summary: This article reports on the scintillation performance of Lithium-doped 2D (PEA)2PbBr4 perovskite single crystals synthesized at room temperature. The crystals exhibit fast decay time, high light yield, and high spatial resolution, making them highly promising for medical diagnostic applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. B. Vishwakarma, S. K. Dubey, R. L. Dubey, I. Sulania, D. Kanjilal
Summary: Investigations have been conducted on the implanted SiO2 thin film after thermal annealing using various analytical techniques. The results revealed the absence of vacancy defects, variations in vibrational modes and the formation of new structures. The photoluminescence intensity of the annealed SiO2 samples was higher, with a decrease in non-radiative defect centers and an increase in radiative Si:SiO2 interface states. Additionally, the presence of silicon nanoclusters formed after annealing resulted in an additional radiative recombination peak. Furthermore, the formation of new SiOx structures was observed after thermal annealing.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
M. Koshimizu, S. Kurashima, A. Kimura, M. Taguchi
Summary: By observing the scintillation time profiles of CeF3 under irradiations of pulsed beams with different LETs, we found that the initial decay was faster for higher LET, which is consistent with previous studies on other self-activated scintillators. This faster decay at higher LET can be explained by the competition between the scintillation caused by 5d-4f transition of Ce3+ ions and quenching due to the interaction between excited Ce3+ ions close to each other.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Junjie Shi, Jianhong Hao, Fang Zhang, Qiang Zhao, Bixi Xue, Jieqing Fan, Zhiwei Dong
Summary: This study examined the neutralization process and beam quality of a hydrogen beam by emitting negative hydrogen ions to a hydrogen target. The findings showed that the neutralization efficiency was influenced by variables such as the transport distance, energy, and target gas density. However, the maximal neutralization efficiency was not affected by the density of the target gas or the energy of the negative hydrogen ions.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
