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Chemistry, Analytical
Filippo Mele, Jacopo Quercia, Leonardo Abbene, Giacomo Benassi, Manuele Bettelli, Antonino Buttacavoli, Fabio Principato, Andrea Zappettini, Giuseppe Bertuccio
Summary: Radiation detectors based on CZT compounds are gaining popularity due to their high detection efficiency, room temperature operation, and reliability. However, their full potential has not been fully exploited, especially at low energies, because of a lack of dedicated front-end electronics. In this study, the latest results achieved in terms of energy resolution using SIRIO and a linear-array pixel detector were presented.
Article
Chemistry, Physical
S. Jazrawi, A. Yaneva, M. Polettini, B. Das, P. H. Regan, M. Gorska, B. Cederwall, J. Jolie, H. M. Albers, M. M. R. Chishti, A. Banerjee, N. Hubbard, A. K. Mistry, M. Rudigier, G. Benzoni, J. Gerl, A. M. Bruce, Zs Podolyak, B. S. Nara Singh, G. X. Zhang, S. Alhomaidhi, C. Appleton, T. Arici, A. Blazhev, T. Davinson, A. Esmaylzadeh, L. M. Fraile, G. Haefner, O. Hall, P. R. John, V Karayonchev, I Koujoharov, N. Kurz, M. Mikolajczuk, N. Pietralla, S. Pietri, J. M. Regis, E. Sahin, L. Sexton, H. Schaffner, C. Scheidenberger, A. Sharma, J. Vesic, H. Weick, V Werner, R. Lozeva, M. Si
Summary: This paper reports the results of the first experiment of the DESPEC Phase-0 campaign at GSI, focusing on the study of neutron-deficient nuclei approaching 100Sn. The experiment provides insights into the electromagnetic transition rates associated with the decays of excited states in 94Ru and 96Pd isotopes.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Astronomy & Astrophysics
M. S. M. Gerathy, A. J. Mitchell, G. J. Lane, A. E. Stuchbery, A. Akber, H. A. Alshammari, L. J. Bignell, B. J. Coombes, J. T. H. Dowie, T. J. Gray, T. Kibedi, B. P. McCormick, L. J. McKie, M. S. Rahman, M. Reece, N. J. Spinks, B. P. E. Tee, Y. Y. Zhong, K. Zhu
Summary: Excited-state lifetimes were measured in three N = 125 isotones, showing almost identical transition energies for the first excited state to ground state transition. The role of protons as spectators increases along the isotone chain, with large-basis shell-model calculations underestimating the experimental values. The near-constant transition energies are attributed to complex nucleon-nucleon correlations enhancing quadrupole collectivity beyond the shell-model valence space.
Article
Chemistry, Analytical
Leonardo Abbene, Antonino Buttacavoli, Fabio Principato, Gaetano Gerardi, Manuele Bettelli, Andrea Zappettini, Massimiliano Bazzi, Mario Bragadireanu, Michael Cargnelli, Marco Carminati, Alberto Clozza, Griseld Deda, Raffaele Del Grande, Luca De Paolis, Laura Fabbietti, Carlo Fiorini, Carlo Guaraldo, Mihail Iliescu, Misahiko Iwasaki, Aleksander Khreptak, Simone Manti, Johann Marton, Marco Miliucci, Pawel Moskal, Fabrizio Napolitano, Szymon Niedzwiecki, Hiroaky Ohnishi, Kristian Piscicchia, Yuta Sada, Francesco Sgaramella, Hexi Shi, Michall Silarski, Diana Laura Sirghi, Florin Sirghi, Magdalena Skurzok, Antonio Spallone, Kairo Toho, Marlene Tuechler, Oton Vazquez Doce, Chihiro Yoshida, Johannes Zmeskal, Alessandro Scordo, Catalina Curceanu, Ismael Martel Bravo
Summary: Kaonic atom X-ray spectroscopy is a technique used to study the physics of strong kaon-nucleus/nucleon interaction. Previous experiments have focused on soft X-ray emission from light kaonic atoms, while new research activities now aim to measure hard X-rays from intermediate kaonic atoms. The development of a prototype detector based on cadmium-zinc-telluride (CZT) has shown promising results in terms of high-resolution capabilities and performance in rejecting background effects.
Article
Instruments & Instrumentation
Y. Li, P. Gong, X. Tang, Z. Hu, P. Wang, F. Tian, S. Wu, M. Ye, C. Zhou, X. Zhu
Summary: An improved energy correction algorithm is proposed for multiple energy gamma-ray detection, which shows excellent correction results. The influence of the DOI correction method on Compton imaging quality is also discussed.
JOURNAL OF INSTRUMENTATION
(2022)
Article
Instruments & Instrumentation
Daniel Shy, David Goodman, Ryan Parsons, Michael Streicher, Willy Kaye, Lee Mitchell, Zhong He, Bernard Phlips
Summary: Pixelated CdZnTe detectors are a promising imaging-spectrometer for gamma-ray astrophysics due to their combination of relatively high energy resolution with room temperature operation negating the need for cryogenic cooling. This work studies the effects of proton irradiation on CdZnTe and quantifies the radiation damage induced.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Instruments & Instrumentation
A. Bolotnikov, G. Carini, M. Chekhlov, A. Dellapenna, J. Fried, J. Haupt, S. Herrmann, I Kotov, D. Medvedev, A. Moiseev, G. Pinaroli, A. Rusek, M. Sasaki, M. Sivertz, L. Smith, E. Yates
Summary: The study evaluated the radiation effects induced by 100 MeV protons in 3-cm long CdZnTe detectors and assessed the feasibility of using such long detectors in future space missions.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2022)
Article
Engineering, Electrical & Electronic
Shulei Wang, Xiangzhi Cao, Chen Xie, Jijun Zhang, Xiaoyan Liang, Linjun Wang, Zheren Xu, Xiaolong Song, Panhui Qiu
Summary: This study investigated the effect of low-temperature rapid annealing on the interface structure, electrical properties, and carrier transport performance of Pt/CdZnTe samples. The results showed that rapid annealing can decrease the voltage drop across the PtTe interface layer and improve the performance of Pt/CdZnTe detectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Ceramics
Mariana Sendova, Jose A. Jimenez, Charles L. Crawford, Isaac Moncada-Almendarez
Summary: This study investigated the thermal bleaching of heavily gamma-irradiated nuclear waste glass simulant in real time using non-isothermal UV/Vis optical microspectroscopy. A novel opto-thermal technique called temperature scanning bleaching spectroscopy (TSBS) was proposed and the sigmoidal behavior of the material was discussed in the context of thermally generated polaron flux.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Engineering, Electrical & Electronic
Mustafa Unal, Ozden Basar Balbasi, Mehmet Can Karaman, Ayse Merve Genc, Mehmet Parlak, Rasit Turan
Summary: This paper presents the production process of high-quality CdZnTe crystals, and the use of the travelling heater method can produce crystals compatible with commercially available ones.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Analytical
Stergios Tsigaridas, Silvia Zanettini, Manuele Bettelli, Nicola Sarzi Amade, Davide Calestani, Cyril Ponchut, Andrea Zappettini
Summary: Development of pixelated sensors made from CdZnTe crystals grown by Boron oxide encapsulated vertical Bridgman technique for direct detection of X-rays in the energy range 30-100 keV has shown promising performance, with reasonable uniformity and low leakage current values achieved despite issues related to single-chip fabrication procedure.
Article
Chemistry, Analytical
Antonino Buttacavoli, Fabio Principato, Gaetano Gerardi, Manuele Bettelli, Andrea Zappettini, Paul Seller, Matthew C. Veale, Silvia Zanettini, Leonardo Abbene
Summary: High-flux X-ray measurements require mitigation of pile-up and dead time effects. This study presents the performance of CZT pixel detectors equipped with digital shapers for high-energy resolution and throughput, showing improvements in energy resolution, time stability, and pile-up.
Article
Chemistry, Physical
M. Alkhorayef, A. Sulieman, O. A. Alsager, F. Alrumayan, N. Alkhomashi
Summary: This study explores the potential of using 3 gamma imaging to assess tumor hypoxia, utilizing the positron emission and annihilation processes to reveal oxygen deficiency in tumors.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Caroline Egan, Ariel Amsellem, Daniel Klyde, Bernhard Ludewigt, Arun Persaud
Summary: Associated particle imaging (API) is used to obtain 3-D isotopic distributions within an object by utilizing the inelastic scattering of neutrons produced in deuterium-tritium (DT) fusion reactions. This article analyzes the impact of center-of-mass (COM) corrections on the reconstruction of scattering locations. The results show that the mean of the reconstructed locations can be considered a correctable systematic error, while the distribution of reconstructed locations introduces an uncorrectable error.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2023)
Article
Engineering, Aerospace
Daniel P. Violette, Branden Allen, Jaesub Hong, Hiromasa Miyasaka, Jonathan Grindlay
Summary: Detector commanding, processing, and readout for spaceborne instrumentation often require the use of ASICs. This article focuses on the ASIC designed for the NuSTAR mission, which enables readout for future x-ray detectors. The article discusses the modifications made to the ASIC's gain settings and the implementation of an additional tuning parameter to achieve optimal energy resolution and low energy threshold for the HREXI instrument.
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
(2023)