Article
Computer Science, Interdisciplinary Applications
P. Talou, I. Stetcu, P. Jaffke, M. E. Rising, A. E. Lovell, T. Kawano
Summary: The CGMF code implements the Hauser-Feshbach statistical nuclear reaction model for the de-excitation of fission fragments, using Monte Carlo technique. It allows for the analysis of complex distributions and correlations of prompt fission observables, while studying characteristics of prompt fission neutrons, prompt fission gamma rays, and independent fission yields consistently.
COMPUTER PHYSICS COMMUNICATIONS
(2021)
Article
Astronomy & Astrophysics
Neeraj Kumar, Shashi Verma, Shabnam Mohsina, Jhilam Sadhukhan, K. Rojeeta Devi, A. Banerjee, N. Saneesh, M. Kumar, Ruchi Mahajan, Meenu Thakur, Gurpreet Kaur, Anjali Rani, Neelam, Abhishek Yadav, Kavita, Rakesh Kumar, Unnati, S. Mandal, Suresh Kumar, B. R. Behera, K. S. Golda, A. Jhingan, P. Sugathan
Summary: The neutron multiplicities before and after scission were measured for the fission of Rn-208 induced by Si-30+Hf-178 and Ti-48+Gd-160 reactions. Significant differences were found in the pre-scission neutron multiplicities of these two systems. The study emphasizes the crucial contribution of neutrons emitted during the fusion process in determining the neutron multiplicities for the present systems.
Article
Instruments & Instrumentation
N. Saneesh, K. S. Golda, A. Jhingan, S. Venkataramanan, T. Varughese, Mohit Kumar, Meenu Thakur, Ruchi Mahajan, B. R. Behera, P. Sugathan, A. Chatterjee, M. B. Chatterjee
Summary: The National Array of Neutron Detectors (NAND) is a facility consisting of a 100 element neutron detector array installed at the Inter University Accelerator Centre (IUAC) in New Delhi. The detector array comprises organic liquid scintillators coupled to photomultipliers, demonstrating good performance in n-gamma discrimination and time-of-flight capabilities.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Astronomy & Astrophysics
Aniruddha Dey, D. C. Biswas, A. Chakraborty, S. Mukhopadhyay, A. K. Mondal, K. Mandal, B. Mukherjee, R. Chakrabarti, B. N. Joshi, L. A. Kinage, S. Chatterjee, S. Samanta, S. Das, Soumik Bhattacharya, R. Banik, S. Nandi, Shabir Dar, R. Raut, G. Mukherjee, S. Bhattacharyya, S. S. Ghugre, A. Goswami
Summary: Two distinct compound nucleus fission modes have been observed and the related yield distributions and neutron multiplicity distributions have been obtained. The results are consistent with theoretical predictions and have significant implications for the study of fission.
Article
Physics, Nuclear
A. Esmaylzadeh, V Karayonchev, G. Haefner, J. Jolie, M. Beckers, A. Blazhev, A. Dewald, C. Fransen, A. Goldkuhle, L. Knafla, C. Mueller-Gatermann
Summary: The lifetimes of low-spin excited states in Pd-112 were measured using recoil-distance Doppler-shift technique, and the reduced transition probabilities obtained from these lifetimes were compared with different theoretical models. The study provides insights into the nuclear shape and structure, suggesting a possible rigid triaxial nucleus and more indicators for a gamma-soft nucleus.
Article
Astronomy & Astrophysics
G. Pasqualato, A. Gottardo, D. Mengonia, A. Goasduff, J. J. Valiente-Dobon, F. Nowacki, S. Peru, N. Pillet, G. de Angelis, S. D. Bakes, T. Bayram, D. Bazzacco, G. Benzoni, D. Brugnara, M. Cicerchia, P. Colovic, M. L. Cortes, A. Gadea, F. Galtarossa, M. Gorska, A. Gozzelino, E. Gregor, N. Hubbard, A. Illana, M. Jurado, S. M. Lenzi, G. Mantovani, T. Marchi, R. Menegazzo, A. Montaner-Piza, D. R. Napoli, F. Recchia, M. Siciliano, D. Testov, S. Szilner, I. Zanon
Summary: This work presents a new approach to the problem of B(E2) values in Sn isotopes, focusing on the Sn-100 nucleus. The measurement of low-lying excited states in odd-even Sn isotopes provides valuable information for understanding nuclear structure. In this study, lifetime measurements were performed in Sn-105 using the Recoil Distance Doppler Shift technique. The results were compared with theoretical calculations and showed the importance of proton excitation in the Sn-100 core. The B(E2) of the core-coupled state demonstrates an enhanced staggering compared to even-mass Sn-104 and Sn-106 isotopes.
Article
Physics, Nuclear
Amandeep Kaur, Nitin Sharma, Manoj K. Sharma
Summary: The analysis of even mass Fm242-260 isotopes using a preformed cluster model based on quantum mechanical fragmentation theory reveals differences in fission fragment mass distributions under different deformation configurations, with discrepancies in the calculated SF half-lives compared to experimental data.
Article
Computer Science, Information Systems
Carlo Cazzaniga, Marta Bagatin, Simone Gerardin, Alessandra Costantino, Christopher D. Frost
Summary: The ChipIr beamline has been constructed at the ISIS neutron and muon source in the UK to address the limited availability of fast neutron facilities in Europe for testing microelectronics. It has been designed for Single Event Effect testing requiring a uniform intensity beam over a selectable area. Comparative characterization with a memory chip developed by ESA for monitoring radiation fields has shown consistent results, providing confidence in the intensity and shape of ChipIr's fast neutron spectrum.
IEEE TRANSACTIONS ON EMERGING TOPICS IN COMPUTING
(2021)
Article
Astronomy & Astrophysics
N. Wang, W. Ye
Summary: We propose the second-chance survival probability (Psur2) as a new observable to constrain the nuclear dissipation strength (β). By using the Langevin model, we calculate Psur2 as a function of β for 232Cf, 230Cm, and 216U at different bombarding energies Elab. The results show that Psur2 is highly sensitive to β. Furthermore, we find that Psur2 depends more on β than on Elab, indicating the reliability of using Psur2 to determine β. Our findings suggest that measuring the second-chance survival probability of neutron-deficient heavy systems at high energy can not only provide a stronger constraint on presaddle friction but also offer a good method to probe the temperature dependence of nuclear dissipation.
Article
Astronomy & Astrophysics
B. M. A. Swinton-Bland, J. Buete, D. J. Hinde, M. Dasgupta, T. Tanaka, A. C. Berriman, D. Y. Jeung, K. Banerjee, L. T. Bezzina, I. P. Carter, K. J. Cook, C. Sengupta, C. Simenela, E. C. Simpson, M. A. Stoyer
Summary: The observation of mass-asymmetric fission in neutron-deficient 180Hg expanded the region of mass-asymmetric fission and stimulated research on the fission of sub-lead nuclei. The fission modes of 178Pt were investigated, revealing the presence of three modes: one mass-symmetric and two mass-asymmetric. New high-statistics data were obtained and analyzed, highlighting the importance of fitting the two-dimensional mass-kinetic energy distribution for accurate results. Systematic studies and rigorous statistical analysis are crucial to determine the shell effects responsible for multi-modal mass-asymmetric fission in this region.
Article
Physics, Multidisciplinary
Mark B. Chadwick, Roberto Capote
Summary: This paper describes how the prompt fission neutron spectrum (PFNS) was determined for the Manhattan Project at Los Alamos. The early work before World War II, theoretical work, and influential experiments on natural uranium are discussed. The challenges faced by scientists included the availability of small samples and fast neutron detection technologies. The paper also highlights post-war measurements and compares them with the current understanding of the PFNS.
FRONTIERS IN PHYSICS
(2023)
Article
Physics, Nuclear
Tathagata Banerjee, E. M. Kozulin, N. T. Burtebayev, K. B. Gikal, G. N. Knyazheva, I. M. Itkis, K. Novikov, T. N. Kvochkina, Y. S. Mukhamejanov, A. N. Pan
Summary: The characteristics of fission modes in O-16 + U-238 reaction are investigated through the mass distribution and total kinetic energy distribution. The results show that the characteristics of fission modes vary at different excitation energies. The heavy fragments are found to be associated with specific shells. Additionally, the ratio of asymmetric to symmetric fission yields shows a similar trend with increasing excitation energy, which is consistent with previous findings.
Article
Astronomy & Astrophysics
K. Chakraborty, M. T. Senthil Kannan, Jhilam Sadhukhan, S. Mandal
Summary: This study investigates the influence of entrance-channel shell closure on fusion-fission dynamics by analyzing existing data for various target and projectile combinations. The reanalysis of measured data for fusion-fission reactions with 16O projectile and targets with proton or both proton and neutron shell closure shows consistent results, contradicting previous data. Theoretical analysis within the statistical model framework reveals that the magicity of the entrance channel significantly affects the dissipation strength, with similar effects observed in the evaporation residue cross-section. This analysis establishes a relationship between exit channel observables and entrance channel shell closure, challenging the hypothesis of complete equilibrium in compound nuclear reactions.
Review
Physics, Nuclear
Stephen Croft, Andrea Favalli
Summary: Passive neutron multiplicity counting is a widely applied technical measure for nuclear safeguards and nonproliferation, especially for the nondestructive verification and mass-assay of items containing separated plutonium. Studies on the spontaneous fission half-lives of Pu isotopes Pu-238, Pu-240, and Pu-242 are crucial for interpreting measurement data, and it is recommended to conduct more experiments for further research and improvement.
NUCLEAR DATA SHEETS
(2021)
Article
Physics, Nuclear
Javier Rufino Jr, E. A. McCutchan, S. Zhu, A. A. Sonzogni, M. Alcorta, P. F. Bertone, M. P. Carpenter, J. Clark, C. R. Hoffman, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, C. J. Lister, R. Pardo, A. Rogers, G. Savard, D. Seweryniak, R. Vondrasek
Summary: This study investigates the decay of the fission fragment Ba-141 to understand the beta-decay strength function of nuclides produced in fission. Different experimental techniques were used, and the results were compared with previous studies, showing excellent agreement and providing a benchmark for further understanding the structure of La-141.
Article
Instruments & Instrumentation
A. K. Petoukhov, V. V. Nesvizhevsky, T. Bigault, P. Courtois, A. Devishvili, D. Jullien, T. Soldner
Summary: This paper presents the final construction and commissioning results of an advanced solid-state neutron polarizer. The polarizer uses spin-selective reflection of neutrons by interfaces coated with polarizing super-mirrors. It has been installed and tested in the PF1B casemate at the ILL, achieving record-breaking polarization performance.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Physics, Multidisciplinary
M. Ballan, S. Bottoni, M. Caamano, A. Caciolli, M. Campostrini, M. Cicerchia, F. C. L. Crespi, S. Cristallo, D. Dell'Aquila, R. Depalo, E. Fioretto, F. Galtarossa, L. R. Gasques, A. Gottardo, F. Gramegna, F. Gulminelli, T. Kurtukian-Nieto, M. La Cognata, S. M. Lenzi, T. Marchi, K. Mazurek, D. Mengoni, L. Mou, R. Nania, G. Pupillo, J. J. Valiente-Dobon, I. Zanon, L. Acosta, M. A. G. Alvarez, A. Andrighetto, A. Arazi, A. Arzenton, M. Assie, M. Bagatin, F. Barbaro, C. Barbieri, S. Barlini, L. Basirico, G. Battistoni, D. Beaumel, M. A. Bentley, G. Benzoni, S. Bertoldo, C. Bertulani, A. Bonasera, A. Camaiani, L. Canton, V. Capirossi, M. P. Carante, C. Carraro, S. M. Carturan, G. Casini, F. Cavanna, L. Centofante, E. R. Chavez, A. Chbihi, M. Ciemala, S. Cisternino, A. Colombi, M. Colucci, A. Compagnucci, S. Corradetti, L. Corradi, G. D'Agata, G. de Angelis, L. De Dominicis, D. De Salvador, E. DeFilippo, M. Del Fabbro, A. Di Nitto, S. Ditalia Tchernij, A. Donzella, T. Duguet, J. Esposito, F. Favela, J. P. Fernandez-Garcia, F. Flavigny, A. Fontana, B. Fornal, J. Forneris, B. Fraboni, J. Frankland, E. Gamba, E. Geraci, S. Gerardin, S. A. Giuliani, B. Gnoffo, F. Groppi, D. Gruyer, F. Haddad, J. Isaak, M. Kmiecik, A. Koning, L. Lamia, N. Le Neindre, S. Leoni, A. Lepine-Szily, G. Lilli, I. Lombardo, M. Loriggiola, L. Loriggiola, M. Lunardon, G. Maggioni, A. Maj, S. Manenti, M. Manzolaro, L. E. Marcucci, D. J. Marin-Lambarri, E. Mariotti, G. Martin Hernandez, C. Massimi, P. Mastinu, M. Mazzocco, A. Mazzolari, T. Mijatovic, T. Mishenina, K. Mizuyama, A. Monetti, G. Montagnoli, L. Morselli, L. Moschini, E. Musacchio Gonzalez, A. Nannini, Y. F. Niu, S. Ota, A. Paccagnella, S. Palmerini, L. Pellegri, A. Perego, S. Piantelli, D. Piatti, F. Picollo, M. Pignatari, F. Pinna, S. Pirrone, R. G. Pizzone, M. Polettini, G. Politi, L. Popescu, G. Prete, A. Quaranta, R. Raabe, J. P. Ramos, W. Raniero, G. G. Rapisarda, F. Recchia, V. Rigato, X. Roca Maza, M. Rocchini, T. Rodriguez, C. Roncolato, D. Rudolph, P. Russotto, A. M. Sanchez-Benitez, D. Savran, D. Scarpa, M. Scheck, K. Sekizawa, M. L. Sergi, F. Sgarbossa, L. Silvestrin, O. Singh Khwairakpam, J. Skowronski, V. Soma, R. Sparta, M. Spieker, A. M. Stefanini, H. Steiger, L. Stevanato, M. R. Stock, E. Vardaci, D. Verney, D. Vescovi, E. Vittone, V. Werner, C. Wheldon, O. Wieland, K. Wimmer, J. Wyss, L. Zago, A. Zenoni
Summary: This report presents a detailed discussion of the outcomes from a workshop organized by the nuclear physics community to explore new physics opportunities in the near future using state-of-the-art detection systems.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Nuclear
A. Harter, A. Esmaylzadeh, L. Knafla, C. Fransen, F. Spee, J. Jolie, M. Ley, V. Karayonchev, J. Fischer, A. Pfeil
Summary: In this study, the lifetimes of the low-lying yrast states 2+, 4+, and 6+ of the unstable nucleus 182Os were measured using digital fast-timing techniques. The lifetimes of the 4+ and 6+ states were determined for the first time. The discrepancy between two inconsistent literature values was evaluated by taking into account the remeasured value for the lifetime of the 2+1 state.
Article
Physics, Nuclear
D. Thisse, M. Lebois, D. Verney, J. N. Wilson, N. Jovancevic, M. Rudigier, R. Canavan, D. Etasse, P. Adsley, A. Algora, M. Babo, K. Belvedere, J. Benito, G. Benzoni, A. Blazhev, A. Boso, S. Bottoni, M. Bunce, R. Chakma, N. Cieplicka-Orynczak, S. Courtin, M. L. Cortes, P. Davies, C. Delafosse, M. Fallot, B. Fornal, L. Fraile, D. Gjestvang, A. Gottardo, V. Guadilla, R. -B. Gerst, G. Haefner, K. Hauschild, M. Heine, C. Henrich, I. Homm, J. Hommet, F. Ibrahim, L. W. Iskra, P. Ivanov, S. Jazrawi, A. Korgul, P. Koseoglou, T. Kroell, T. Kurtukian-Nieto, L. Le Meur, S. Leoni, J. Ljungvall, A. Lopez-Martens, R. Lozeva, I. Matea, K. Miernik, J. Nemer, S. Oberstedt, W. Paulsen, M. Piersa-Silkowska, W. Poklepa, Y. Popovitch, C. Porzio, L. Qi, D. Ralet, P. H. Regan, D. Reygadas-Tello, K. Rezynkina, V. Sanchez-Tembleque, S. Siem, C. Schmitt, P. -A. Soederstroem, K. Solak, C. Suerder, G. Tocabens, V. Vedia, N. Warr, B. Wasilewska, J. Wiederhold, M. Yavahchova, F. Zeiser, S. Ziliani
Summary: Medium spin states of light N = 50 isotones were produced through fast neutron-induced fission of Th-232. Online prompt gamma spectroscopy was performed to study the medium spin states of the neutron-rich nucleus Ge-82. Two new transitions were observed and a new level was added in the level scheme. The new state was tentatively assigned a (7(+)) spin-parity, indicating a new N = 50 core breaking state, providing insights into the energy evolution of the N = 50 shell gap toward Ni-78.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Multidisciplinary
G. Corbari, S. Bottoni, M. Ciemala, F. C. L. Crespi, S. Leoni, B. Fornal, R. V. F. Janssens, S. D. Pain, M. Siciliano, E. Albanese, A. D. Ayangeakaa, G. Benzoni, S. Carmichael, M. Carpenter, K. Chipps, N. Cieplicka, P. Copp, J. Forson, E. Gamba, L. W. Iskra, H. Jayatissa, F. Kondev, T. Lauritsen, B. Million, C. Mueller-Gatermann, A. Palmisano, M. Polettini, C. Porzio, W. Reviol, N. Sensharma, D. Seweryniak, C. Ummel, O. Wieland, G. Wilson, S. Zhu, S. Ziliani
Summary: The γ decay from the 2+2 near-threshold resonance in 14C was studied using the GODDESS setup, composed of the GRETINA γ-ray spectrometer and the ORRUBA charged particle detector, in a fusion-evaporation experiment at Argonne National Laboratory. The Shell Model Embedded in the Continuum predicts a significant enhancement of the 2+2 → 0 transition probability due to the collectivization of the near-threshold state. The experiment's sensitivity is comparable to the expected γ branch of about 5 x 10-5.
NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS
(2023)
Article
Physics, Nuclear
M. A. Bentley, G. Benzoni, K. Wimmer
Summary: This paper presents an analysis of AGATA's capabilities for in-beam γ-ray spectroscopy at relativistic energies. By determining the position of γ-ray interaction points in the Germanium crystal, AGATA enables high γ-ray energy resolution when the emitting nucleus is traveling at a speed exceeding half the speed of light. The study discusses various experimental techniques using AGATA under these conditions, including Doppler-based methods for lifetime determination. It also explores the properties of key reaction mechanisms expected to be applied at the future FAIR facility for in-beam γ-ray spectroscopy and how AGATA's advanced capabilities can exploit these reactions.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Proceedings Paper
Physics, Nuclear
S. Bottoni, E. R. Gamba, G. De Gregorio, A. Gargano, S. Leoni, B. Fornal, N. Brancadori, G. Ciconali, F. C. L. Crespi, N. Cieplicka-Orynczak, L. W. Iskra, G. Colombi, Y. H. Kim, U. Koester, C. Michelagnoli, F. Dunkel, A. Esmaylzadeh, L. Gerhard, J. Jolie, L. Knafla, M. Ley, J. -M. Regis, K. Schomaker, M. Sferrazza
Summary: The structure of the 11/2(1)(+) state in Sb-131 was studied using neutron-induced fission of U-235 and lifetime measurements. The measured lifetime T-1/2=3(2) ps, at the edge of the experimental method's sensitivity, provides a quadrupole reduced transition probability B(E2)=1.4(-0.6)(+1.5) W.u. to the ground state, similar to the B(E2;2(1)(+) -> 0(1)(+)) in Sn-130. Shell-model calculations show good agreement with the experimental level scheme of 131 Sb and the B(E2;11/2(1)(+). 7/2(1)(+)) value, indicating a dominant 2+(Sn-130) circle times pi g(7/2) core-proton coupled configuration for the 11/2(1)(+) state.
13TH INTERNATIONAL SPRING SEMINAR ON NUCLEAR PHYSICS PERSPECTIVES AND CHALLENGES IN NUCLEAR STRUCTURE AFTER 70 YEARS OF SHELL MODEL, ISS 2022
(2023)
Proceedings Paper
Physics, Nuclear
M. Gorska, H. M. Albers, T. Arici, A. Banerjee, G. Benzoni, A. Blazhev, B. Cederwall, B. Das, T. Davinson, J. Gerl, H. Grawe, O. Hall, N. Hubbard, S. Jazrawi, J. Jolie, M. Mikolajczuk, A. K. Mistry, D. Mengoni, Zs. Podolyak, M. Polettini, P. H. Regan, M. Ruedigier, A. Yaneva, J. Vesic, G. Zhang
Summary: The study of Sn-100 and neighbouring nuclei is important due to its status as the heaviest doubly-magic nucleus with N=Z. Experimental techniques have allowed access to these exotic nuclei, and the analysis of data from two DESPEC experiments extends our understanding of the shell structure and proton-neutron interaction. Theoretical approaches for shell-model investigations are discussed and the predictive power of these models is assessed. The first systematic calculation of reduced transition probabilities for N similar to Z isotopes with active g(9/2) orbit is presented.
13TH INTERNATIONAL SPRING SEMINAR ON NUCLEAR PHYSICS PERSPECTIVES AND CHALLENGES IN NUCLEAR STRUCTURE AFTER 70 YEARS OF SHELL MODEL, ISS 2022
(2023)
Article
Physics, Nuclear
E. Clement, A. Lemasson, M. Rejmund, B. Jacquot, D. Ralet, C. Michelagnoli, D. Barrientos, P. Bednarczyk, G. Benzoni, A. J. Boston, A. Bracco, B. Cederwall, M. Ciemala, J. Collado, F. Crespi, C. Domingo-Pardo, J. Dudouet, H. J. Eberth, G. de France, A. Gadea, V. Gonzalez, A. Gottardo, L. Harkness, H. Hess, A. Jungclaus, A. Kaskas, W. Korten, S. M. Lenzi, S. Leoni, J. Ljungvall, R. Menegazzo, D. Mengoni, B. Million, D. R. Napoli, J. Nyberg, Zs. Podolyak, A. Pullia, B. Quintana Arnes, F. Recchia, N. Redon, P. Reiter, M. D. Salsac, E. Sanchis, M. Senyigit, M. Siciliano, D. Sohler, O. Stezowski, C. Theisen, J. J. Valiente Dobon
Summary: This study investigates the evolution of nuclear deformation in the Xe isotopic chain and explores the relevance of O(6) symmetry. Experimental measurements reveal that the ground state band of 124Xe is prolate axially deformed, confirming the breaking of O(6) symmetry in this isotope.
Article
Physics, Nuclear
B. Moon, C. -b. Moon, A. Odahara, R. Lozeva, S. Nishimura, C. Yuan, F. Browne, P. Doornenbal, G. Lorusso, Z. Patel, S. Rice, 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 of 142Te90 to 142I89 was investigated for the first time. The parent nucleus was produced by the in-flight fission of a 238U beam with an energy of 345 MeV per nucleon, impinging on a 9Be target at the Radioactive Isotope Beam Factory of RIKEN. Excited states in 142I were established by beta-delayed gamma-ray spectroscopy. The (1+) states in 142I were found to be predominantly formed by a Gamow-Teller transition between a neutron and a proton in specific orbitals.
Article
Physics, Particles & Fields
C. Augier, G. Baulieu, V. Belov, L. Berge, J. Billard, G. Bres, J-. L. Bret, A. Broniatowski, M. Calvo, A. Cazes, D. Chaize, M. Chapellier, L. Chaplinsky, G. Chemin, R. Chen, J. Colas, M. De Jesus, P. de Marcillac, L. Dumoulin, O. Exshaw, S. Ferriol, E. Figueroa-Feliciano, J. -b. Filippini, J. A. Formaggio, S. Fuard, J. Gascon, A. Giuliani, J. Goupy, C. Goy, C. Guerin, E. Guy, P. Harrington, S. T. Heine, S. A. Hertel, M. Heusch, C. F. Hirjibehedin, Z. Hong, J. -c. Ianigro, Y. Jin, J. P. Johnston, A. Juillard, D. Karaivanov, S. Kazarcev, J. Lamblin, H. Lattaud, M. Li, A. Lubashevskiy, S. Marnieros, D. W. Mayer, J. Minet, D. Misiak, J-. L. Mocellin, A. Monfardini, F. Mounier, W. D. Oliver, E. Olivieri, C. Oriol, P. K. Patel, E. Perbet, H. D. Pinckney, D. Poda, D. Ponomarev, F. Rarbi, J. -s. Real, T. Redon, A. Robert, S. Rozov, I. Rozova, T. Salagnac, V. Sanglard, B. Schmidt, Ye. Shevchik, V. Sibille, T. Soldner, J. Stachurska, A. Stutz, L. Vagneron, W. van de Pontseele, F. Vezzu, S. Weber, L. Winslow, E. Yakushev, D. Zinatulina
Summary: The future RICOCHET experiment aims to search for new physics in the electroweak sector by measuring the Coherent Elastic Neutrino-Nucleus Scattering (CENNS). The experiment will use a low-energy-threshold detector array with Ge and Zn target crystals, located near a research nuclear reactor core. The RICOCHET Collaboration is characterizing the neutron backgrounds to optimize the experiment's shielding design. The results show that the experiment should reach a statistical significance of 4.6 to 13.6 sigma for the detection of CENNS after one reactor cycle.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Proceedings Paper
Physics, Multidisciplinary
A. Yaneva, S. Jazrawi, B. Das, M. Mikolajczuk, M. Gorska, P. H. Regan, B. Cederwall, J. Jolie, G. Benzoni, H. M. Albers, S. Alhomaidhi, T. Arici, A. Banerjee, M. M. R. Chishti, T. Davinson, J. Gerl, O. Hall, N. Hubbard, I. Kojouharov, A. K. Mistry, M. Polettini, M. Rudigier, E. Sahin, H. Schaffner, A. Sharma, H. J. Wollersheim, P. Boutachkov, T. Dickel, E. Haettner, H. Heggen, C. . H. Hornung, R. Knoebel, D. Kostyleva, N. Kurz, N. Kuzminchuk, I. Mukha, S. Pietri, W. R. Plass, ZS. Podolyak, C. Scheidenberger, Y. K. Tanaka, J. Vesic, H. Weick, U. Ahmed, O. Aktas, A. Algora, C. Appleton, J. Benito, A. Blazhev, A. Bracco, A. Bruce, M. Brunet, R. Canavan, A. Esmaylzadeh, L. M. Fraile, G. Haefner, K. P. Hucka, P. R. John, D. Kahl, V. Karayonchev, R. Kern, G. Kosir, R. Lozeva, P. Napiralla, B. S. Nara Singh, R. D. Page, C. M. Petrache, N. Pietralla, J. -M. Regis, H. Roesch, P. Ruotsalainen, V. Sanchez-Temble, L. Sexton, R. Shearman, M. Si, V. Werner, J. Wiederhold, K. Wimmer, W. Witt, P. Woods, G. Zimba
Summary: Direct lifetime measurements for excited states below previously reported isomers were performed using the FATIMA fast-timing LaBr3(Ce) array via gamma-gamma coincidences. The lifetimes below the I pi = 8+ seniority isomer in the N = 50 semi-magic 96Pd nucleus were studied as a benchmark for further analysis. The results confirm the published values for the I pi = 2+ and 4+ states, with improved accuracy achieved for the 4+ state lifetime.
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT
(2023)
Proceedings Paper
Physics, Multidisciplinary
L. G. Pedersen, E. Sahin, A. Gorgen, F. L. Bello Garrote, Y. Tsunoda, T. Otsuka, M. Niikura, S. Nishimura, Z. Xu, H. Baba, G. Benzoni, F. Browne, A. M. Bruce, S. Ceruti, F. C. L. Crespi, R. Daido, G. de Angelis, M. -C. Delattre, Zs Dombradi, P. Doornenbal, Y. Fang, S. Franchoo, G. Gey, A. Gottardo, T. Isobe, P. R. John, H. S. Jung, I. Kojouharov, T. Kubo, N. Kurz, I. Kuti, Z. Li, G. Lorusso, I. Matea, K. Matsui, D. Mengoni, T. Miyazaki, V. Modamio, S. Momiyama, A. I. Morales, P. Morfouace, D. R. Napoli, F. Naqvi, H. Nishibata, A. Odahara, R. Orlandi, Z. Patel, S. Rice, H. Sakurai, H. Schaffner, L. Sinclair, P. -A. Soderstrom, D. Sohler, I. G. Stefan, T. Sumikama, D. Suzuki, R. Taniuchi, J. Taprogge, Z. Vajta, J. J. Valiente-Dobon, H. Watanabe, V. Werner, J. Wu, A. Yagi, M. Yalcinkaya, R. Yokoyama, K. Yoshinaga
Summary: Excited states in Cu-78 were observed for the first time following the ss decay of Ni-78 created by in-flight fission of U-238. A level scheme comprising eight excited states with tentative spin assignments for 5 of them was constructed based on the coincidence relationships between the observed gamma-ray transitions. In addition, an isomeric state with a lifetime of 3.8(4) ms was found to decay by internal conversion.
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT
(2023)
Article
Physics, Nuclear
A. Pfeil, K. Nomura, N. Gavrielov, J. -M. Regis, U. Koster, Y. H. Kim, A. Esmaylzadeh, A. Harter, J. Jolie, L. Knafla, M. Ley, V. Karayonchev
Summary: The rapid shape transition observed in the A approximate to 100 mass region, particularly in Zr isotopes, has attracted special interest. In this study, the lifetimes of low-lying excited states in 99Zr and 99Nb nuclei were determined using fast-timing techniques and experimental setup. The experimental values were compared to calculations from the interacting boson-fermion model and discussed in the context of shape coexistence.
