Article
Multidisciplinary Sciences
Hannah K. Clause, Katharina A. Domnanich, Chloe Kleinfeldt, Morgan Kalman, Wesley Walker, Chirag Vyas, E. Paige Abel, Gregory W. Severin
Summary: This study demonstrates the feasibility of gas-phase isotope harvesting from irradiated accelerator cooling-water and successfully collects Kr-76 and Kr-77 to generate Br-76 and Br-77. This technology has the potential for wider applications.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Ciprian G. Pruteanu, John S. Loveday, Graeme J. Ackland, John E. Proctor
Summary: In this study, a series of neutron scattering experiments were conducted on supercritical krypton, aiming to investigate the Frenkel line crossover in this model monatomic fluid. Through analyzing the experimental data using Empirical Potential Structure Refinement, the short- and medium-range structures of the fluid were determined. The results show the presence of several layers of neighbors surrounding each atom, forming approximately concentric rings of density, with the ratio of second to first shell radius significantly larger than in any crystal structure. The use of Lennard-Jones potential to model krypton was found to have significant errors, indicating the overstructuring of the liquid. The true potential appears to have a longer range and softer core than the 6-12 powerlaws permit.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
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
Geosciences, Multidisciplinary
Farhana Huq, P. Craig Smalley, Viktoriya Yarushina, Ingar Johansen, Christian Alexander Schopke, Lena K. Ovrebo, Elin Skurtveit, Ebbe H. Hartz
Summary: Detailed profiles of formation water Sr-87/Sr-86 ratio and C-O-Sr isotope analysis of carbonate cements can help determine the location, cause, and duration of pressure barriers in reservoirs. This method is useful for identifying major long-term fluid communication barriers.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Optics
J. Keskinen, K. Jankala, S-M Huttula, T. Kaneyasu, Y. Hikosaka, E. Shigemasa, H. Iwayama, K. Soejima, K. Ito, L. Andric, M. A. Khalal, J. Palaudoux, F. Penent, P. Lablanquie
Summary: The experimental and theoretical study on the Auger decay process of the 3d(5/2) hole along the Br, Kr+, and Rb2+ series with electron configuration [Ar] 3d(9)4s(2)4p(6) shows that the decay rate of two-Auger-electron emission increases along the series in the direction of decreasing nuclear charge. The complexity of the Auger spectrum also follows the same trend, requiring a drastic increase to the size of the configuration space for describing the observed spectra.
Review
Chemistry, Multidisciplinary
Erik Johnstone, Natalia Mayordomo, Edward J. Mausolf
Summary: This article presents an overview of the chemical, nuclear, and physical properties of Tc-101 and its applications. Tc-101 is important for research and applications related to radioanalytical tracer studies, fusion materials, and nuclear medicine.
COMMUNICATIONS CHEMISTRY
(2022)
Article
Optics
L. Drescher, O. Kornilov, T. Witting, V. Shokeen, M. J. J. Vrakking, B. Schuette
Summary: The article introduces a concept for efficient spectral compression of XUV radiation through four-wave mixing, demonstrating the ability to compress broadband radiation into narrow-bandwidth XUV pulses. This concept provides new possibilities for tailoring the spectral bandwidth of XUV beams.
Article
Chemistry, Physical
Sandrina Oliveira, Nuno A. G. Bandeira, Joao P. Leal, Leonor Maria, Jose M. Carretas, Bernardo Monteiro, Joaquim Marcalo
Summary: A new interaction between Kr and SF6 has been discovered, resulting in the formation of a new ion complex [KrSF5](+). Computational studies indicate that [KrSF5](+) is relatively stable. The reaction of Xe+ with SF6 is thermodynamically unfavorable and was not observed in the mass spectrometry experiments.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Geochemistry & Geophysics
A. Ardoin, M. W. Broadley, M. Almayrac, G. Avice, D. J. Byrne, A. Tarantola, A. Leblanc, T. Saito, T. Komiya, T. Shibuya, B. Marty
Summary: Noble gases, specifically xenon, have been used as tracers to investigate physical processes over geological timescales. The isotopic composition of xenon has evolved until the Great Oxidation Event, after which it appeared to cease. Investigating xenon trapped in hydrothermal quartz from different formations around the Great Oxidation Event, the researchers found that xenon isotope fractionation stopped during a specific time window, coinciding with the disappearance of mass-independent fractionation of sulfur isotopes in the region. This finding suggests a connection between the rise in atmospheric oxygen and the cessation of xenon isotope fractionation.
GEOCHEMICAL PERSPECTIVES LETTERS
(2022)
Article
Optics
Toshiaki Ando, Alex Liu, Naoki Negishi, Atsushi Iwasaki, Kaoru Yamanouchi
Summary: The spin-orbit splitting energies in the electronic ground states of Ar+, Kr+, and Kr2+ were determined with high precision using Fourier transform of the yields obtained by pump-probe measurements. Isotope effect in Kr-83(+), Kr-84(+), and Kr-86(+) was also examined.
Article
Materials Science, Multidisciplinary
Zhao-Qi Wang, Yun-Jun Gu, Qi-Feng Chen, Zhi-Guo Li, Lei Liu, Guo-Jun Li, Yang-Shun Lan, Xiang-Rong Chen
Summary: Through experiments, the study evaluated the applicability of new exchange-correlation functionals in warm dense matter, indicating that some functionals can better reproduce experimental data while others lead to overly stiff predictions. Additionally, the experimental validation of previous predictions sheds light on future theoretical efforts.
Article
Geochemistry & Geophysics
Yinlei Hao, Xingxing Kuang, Yuqing Feng, Yingchun Wang, Hui Zhou, Chunmiao Zheng
Summary: This study systematically reports the large-scale helium enrichment along the continental convergent margin for the first time. It identifies a 1200-km-long helium enrichment zone and demonstrates the complex crustal-scale structures significantly controlling gas geochemistry in the convergent margin. These findings have profound implications for potential helium resource exploration and He-CO2-N-2 recycling in continental subduction zones.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
History & Philosophy Of Science
K. Brad Wray
Summary: This article challenges Gareth Eaton's claim that Theodore Richards should be considered one of the discoverers of isotopes. Drawing on two influential theories of scientific discovery developed by Thomas Kuhn and Augustine Brannigan, the author argues that although Richards' experimental work contributed to the discovery, it does not warrant attributing the discovery to him.
FOUNDATIONS OF CHEMISTRY
(2023)
Article
Environmental Sciences
Mohamed Osman Awaleh, Tiziano Boschetti, Abdillahi Elmi Adaneh, Mahamoud Ali Chirdon, Moussa Mahdi Ahmed, Omar Assowe Dabar, Youssouf Djibril Soubaneh, Nima Moussa Egueh, Ali Dirir Kawalieh, Ibrahim Houssein Kadieh, Mohamed Chaheire
Summary: The study reveals that the Ali-Sabieh aquifers in the East African Rift System are overexploited and contaminated with high concentrations of nitrate and sulfate, originating from anthropogenic activities and geological processes. The groundwater samples show a chemical evolution from fresh to brackish water mainly due to water-rock interaction.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Physics, Multidisciplinary
Catmarna Kuestner-Wetekam, Lutz Marder, Dana Bloss, Carolin Honisch, Nils Kiefer, Clemens Richter, Simon Rubik, Rebecca Schaf, Christina Zindel, Marko Foerstel, Kirill Gokhberg, Andre Knie, Uwe Hergenhahn, Arno Ehresmann, Premysl Kolorenc, Andreas Hans
Summary: In this study, a method was proposed to determine the site-specific efficiency of the Interatomic Coulombic Decay (ICD) process experimentally, which showed quantitative agreement with theoretical calculations. ICD and related interatomic and intermolecular autoionization mechanisms are common decay processes of excited atoms and molecules in the environment. It is generally accepted that the efficiency of ICD of an ionized atom in a cluster increases with an increasing number of nearest neighbors. In this study, we experimentally validated this assumption by quantitatively comparing ICD and its main competitor, Auger decay, in core-level ionized Kr clusters. Our results are in quantitative agreement with scaled theoretical calculations on Kr-2.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Nuclear
M. Thoennessen
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2015)
Article
Physics, Nuclear
J. K. Smith, T. Baumann, J. Brown, P. A. DeYoung, N. Frank, J. Hinnefeld, Z. Kohley, B. Luther, B. Marks, A. Spyrou, S. L. Stephenson, M. Thoennessen, S. J. Williams
Article
Physics, Nuclear
M. D. Jones, N. Frank, T. Baumann, J. Brett, J. Bullaro, P. A. De Young, J. E. Finck, K. Hammerton, J. Hinnefeld, Z. Kohley, A. N. Kuchera, J. Pereira, A. Rabeh, W. F. Rogers, J. K. Smith, A. Spyrou, S. L. Stephenson, K. Stiefel, M. Tuttle-Timm, R. G. T. Zegers, M. Thoennessen
Article
Physics, Nuclear
A. N. Kuchera, A. Spyrou, J. K. Smith, T. Baumann, G. Christian, P. A. DeYoung, J. E. Finck, N. Frank, M. D. Jones, Z. Kohley, S. Mosby, W. A. Peters, M. Thoennessen
Review
Physics, Nuclear
M. Thoennessen
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2016)
Article
Physics, Nuclear
J. K. Smith, T. Baumann, D. Bazin, J. Brown, P. A. DeYoung, N. Frank, M. D. Jones, Z. Kohley, B. Luther, B. Marks, A. Spyrou, S. L. Stephenson, M. Thoennessen, A. Volya
Review
Physics, Nuclear
M. Thoennessen
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2017)
Review
Physics, Nuclear
M. Thoennessen
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2018)
Review
Physics, Nuclear
M. Thoennessen
INTERNATIONAL JOURNAL OF MODERN PHYSICS E
(2019)
Article
Multidisciplinary Sciences
Y. Kondo, N. L. Achouri, H. Al Falou, L. Atar, T. Aumann, H. Baba, K. Boretzky, C. Caesar, D. Calvet, H. Chae, N. Chiga, A. Corsi, F. Delaunay, A. Delbart, Q. Deshayes, Zs. Dombradi, C. A. Douma, A. Ekstrom, Z. Elekes, C. Forssen, I. Gasparic, J. -M. Gheller, J. Gibelin, A. Gillibert, G. Hagen, M. N. Harakeh, A. Hirayama, C. R. Hoffman, M. Holl, A. Horvat, A. Horvath, J. W. Hwang, T. Isobe, W. G. Jiang, 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. Najafi, T. Nakamura, K. Nakano, N. Nakatsuka, T. Nilsson, A. Obertelli, K. Ogata, F. de Oliveira Santos, N. A. Orr, H. Otsu, T. Otsuka, T. Ozaki, V. Panin, T. Papenbrock, 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, N. Shimizu, Y. Shimizu, H. Simon, D. Sohler, O. Sorlin, L. Stuhl, Z. H. Sun, S. Takeuchi, M. Tanaka, M. Thoennessen, H. Toernqvist, Y. Togano, T. Tomai, J. Tscheuschner, J. Tsubota, N. Tsunoda, T. Uesaka, Y. Utsuno, I. Vernon, H. Wang, Z. Yang, M. Yasuda, K. Yoneda, S. Yoshida
Summary: Subjecting a physical system to extreme conditions is a common method to gain a better understanding of its organization and structure. The investigation of isotopes with different neutron-to-proton ratios than stable nuclei is an important test for nuclear-structure theories. This study reports the first observation of the decay of O-28 and 27O isotopes and compares their decay energies with theoretical models. The results have implications for the understanding of nuclear structure.
Article
Physics, Nuclear
A. N. Kuchera, D. Bazin, T. Phan, J. A. Tostevin, M. Babo, T. Baumann, P. C. Bender, M. Bowry, J. Bradt, J. Brown, P. A. DeYoung, B. Elman, J. E. Finck, A. Gade, G. F. Grinyer, M. D. Jones, B. Longfellow, E. Lunderberg, T. H. Redpath, W. F. Rogers, K. Stiefe, M. Thoennessen, D. Votaw, D. Weisshaar, K. Whitmore, R. B. Wiringa
Summary: This study investigates nucleon removal reactions and validates the models used to calculate the removal reaction cross sections. Three different nucleon removal reactions were performed and the partial cross sections to individual final states were determined by detecting the residual nuclei in coincidence with gamma rays. Comparison between measured and calculated cross sections reveals that the theoretical description of the removal process is in better agreement with the data when removing weakly bound nucleons.
Article
Physics, Nuclear
D. Votaw, P. A. DeYoung, T. Baumann, A. Blake, J. Boone, J. Brown, D. Chrisman, J. E. Finck, N. Frank, J. Gombas, P. Gueye, J. Hinnefeld, H. Karrick, A. N. Kuchera, H. Liu, B. Luther, F. Ndayisabye, M. Neal, J. Owens-Fryar, J. Pereira, C. Persch, T. Phan, T. Redpath, W. F. Rogers, S. Stephenson, K. Stiefel, C. Sword, A. Wantz, M. Thoennessen
Article
Physics, Nuclear
C. Sword, J. Brett, T. Baumann, B. A. Brown, N. Frank, J. Herman, M. D. Jones, H. Karrick, A. N. Kuchera, M. Thoennessen, J. A. Tostevin, M. Tuttle-Timm, P. A. DeYoung
Article
Physics, Nuclear
M. D. Jones, K. Fossez, T. Baumann, P. A. DeYoung, J. E. Finck, N. Frank, A. N. Kuchera, N. Michel, W. Nazarewicz, J. Rotureau, J. K. Smith, S. L. Stephenson, K. Stiefel, M. Thoennessen, R. G. T. Zegers
Article
Physics, Nuclear
M. D. Jones, T. Baumann, J. Brett, J. Bullaro, P. A. DeYoung, J. E. Finck, N. Frank, K. Hammerton, J. Hinnefeld, Z. Kohley, A. N. Kuchera, J. Pereira, A. Rabeh, J. K. Smith, A. Spyrou, S. L. Stephenson, K. Stiefel, M. Tuttle-Timm, R. G. T. Zegers, M. Thoennessen