☆ 4.5 Article

Precise half-life measurement of the superallowed β+ emitter 10C

PHYSICAL REVIEW C (2008)

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PHYSICAL REVIEW C

卷 77, 期 4, 页码 -

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AMER PHYSICAL SOC

DOI: 10.1103/PhysRevC.77.045501

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Physics, Nuclear

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The half-life of C-10 has been measured to be 19.310(4) s, a result with 0.02% precision, which is a factor of three improvement over the best previous result. Since C-10 is the lightest superallowed 0(+)-> 0(+) beta(+) emitter, its ft value has the greatest weight in setting an upper limit on the possible presence of scalar currents.

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Article Astronomy & Astrophysics

Constraining the 12C+12C astrophysical S-factors with the 12C+13C measurements at very low energies

N. T. Zhang, X. Y. Wang, D. Tudor, B. Bucher, I. Burducea, H. Chen, Z. J. Chen, D. Chesneanu, A. I. Chilug, L. R. Gasques, D. G. Ghita, C. Gomoiu, K. Hagino, S. Kubono, Y. J. Li, C. J. Lin, W. P. Lin, R. Margineanu, A. Pantelica, I. C. Stefanescu, M. Straticiuc, X. D. Tang, L. Trache, A. S. Umar, W. Y. Xin, S. W. Xu, Y. Xu

PHYSICS LETTERS B (2020)

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Correction Astronomy & Astrophysics

Constraining the 12C+12C astrophysical S-factors with the 12C+13C measurements at very low energies (vol 801, 135170, 2020)

N. T. Zhang, X. Y. Wang, D. Tudor, B. Bucher, I. Burducea, H. Chen, Z. J. Chen, D. Chesneanu, A. I. Chilug, L. R. Gasques, D. G. Ghita, C. Gomoiu, K. Hagino, S. Kubono, Y. J. Li, C. J. Lin, W. P. Lin, R. Margineanu, A. Pantelica, I. C. Stefanescu, M. Straticiuc, X. D. Tang, L. Trache, A. S. Umar, W. Y. Xin, S. W. Xu, Y. Xu

PHYSICS LETTERS B (2020)

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Article Physics, Particles & Fields

The liquid-argon scintillation pulseshape in DEAP-3600

P. Adhikari, R. Ajaj, G. R. Araujoand, M. Batygov, B. Beltran, C. E. Bina, M. G. Boulay, B. Broerman, J. G. Bueno, A. Butcher, B. Cai, M. Cardenas-Montes, S. Cavuoti, Y. Chen, B. T. Cleveland, J. M. Corning, S. J. Daughertyand, P. Di Stefano, K. Dering, L. Doria, F. A. Duncan, M. Dunford, A. Erlandson, N. Fatemighomi, G. Fiorillo, A. Flower, R. J. Ford, R. Gagnon, D. Gallacher, E. A. Garces, P. Garcia Abia, S. Garg, P. Giampa, D. Goeldi, V. V. Golovko, P. Gorel, K. Graham, D. R. Grant, A. Grobov, A. L. Hallin, M. Hamstra, P. J. Harvey, C. Hearns, A. Ilyasov, A. Joy, C. J. Jillings, O. Kamaev, G. Kaur, A. Kemp, I Kochanek, M. Kuzniak, S. Langrock, F. La Zia, B. Lehnert, N. Levashko, X. Li, O. Litvinov, J. Lock, G. Longo, I Machulin, P. Majewski, A. B. McDonald, T. McElroy, T. McGinn, J. B. McLaughlin, R. Mehdiyev, C. Mielnichuk, J. Monroe, P. Nadeau, C. Nantais, C. Ng, A. J. Noble, G. Oliviero, C. Ouellet, S. Pal, P. Pasuthip, S. J. M. Peeters, V Pesudo, M-C Piro, T. R. Pollmann, E. T. Rand, C. Rethmeier, F. Retiere, E. Sanchez Garcia, T. Sanchez-Pastor, R. Santorelli, N. Seeburn, P. Skensved, B. Smith, N. J. T. Smith, T. Sonley, R. Stainforth, C. Stone, V Strickland, M. Stringer, B. Sur, E. Vazquez-Jauregui, L. Veloce, S. Viel, J. Walding, M. Waqar, M. Ward, S. Westerdale, J. Willis, A. Zuniga-Reyes

EUROPEAN PHYSICAL JOURNAL C (2020)

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Article Physics, Particles & Fields

Pulse-shape discrimination against low-energy Ar-39 beta decays in liquid argon with 4.5 tonne-years of DEAP-3600 data

P. Adhikari, R. Ajaj, M. Alpizar-Venegas, P-A Amaudruz, D. J. Auty, M. Batygov, B. Beltran, H. Benmansour, C. E. Bina, J. Bonatt, W. Bonivento, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, M. Cadeddu, B. Cai, M. Cardenas-Montes, S. Cavuoti, M. Chen, Y. Chen, B. T. Cleveland, J. M. Corning, D. Cranshaw, S. Daugherty, P. DelGobbo, K. Dering, J. DiGioseffo, P. Di Stefano, L. Doria, F. A. Duncan, M. Dunford, E. Ellingwood, A. Erlandson, S. S. Farahani, N. Fatemighomi, G. Fiorillo, S. Florian, T. Flower, R. J. Ford, R. Gagnon, D. Gallacher, P. Garcia Abia, S. Garg, P. Giampa, D. Goeldi, V Golovko, P. Gorel, K. Graham, D. R. Grant, A. Grobov, A. L. Hallin, M. Hamstra, P. J. Harvey, C. Hearns, T. Hugues, A. Ilyasov, A. Joy, B. Jigmeddorj, C. J. Jillings, O. Kamaev, G. Kaur, A. Kemp, I Kochanek, M. Kuzniak, M. Lai, S. Langrock, B. Lehnert, A. Leonhardt, N. Levashko, X. Li, J. Lidgard, T. Lindner, M. Lissia, J. Lock, G. Longo, I Machulin, A. B. McDonald, T. McElroy, T. McGinn, J. B. McLaughlin, R. Mehdiyev, C. Mielnichuk, J. Monroe, P. Nadeau, C. Nantais, C. Ng, A. J. Noble, E. O'Dwyer, G. Oliviero, C. Ouellet, S. Pal, P. Pasuthip, S. J. M. Peeters, M. Perry, V Pesudo, E. Picciau, M-C Piro, T. R. Pollmann, E. T. Rand, C. Rethmeier, F. Retiere, I Rodriguez-Garcia, L. Roszkowski, J. B. Ruhland, E. Sanchez-Garcia, R. Santorelli, D. Sinclair, P. Skensved, B. Smith, N. J. T. Smith, T. Sonley, J. Soukup, R. Stainforth, C. Stone, V Strickland, M. Stringer, B. Sur, J. Tang, E. Vazquez-Jauregui, S. Viel, J. Walding, M. Waqar, M. Ward, S. Westerdale, J. Willis, A. Zuniga-Reyes

Summary: The DEAP-3600 detector searches for scintillation signal from dark matter particles by using pulse-shape discrimination to suppress the background from 39Ar beta decays. Two PSD estimators and algorithms are used to determine the number of detected photons, with the prompt-fraction performing similarly to the log-likelihood-ratio PSD algorithm if detector effects are not biased. An explanation is provided using a model for the information carried by scintillation photons as a function of the time when they are detected.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Environmental Sciences

Current status of eye-lens dosimetry in Canada

Jacques Dubeau, Jiansheng Sun, Salah Djeffal, Neil Leroux, Victor Golovko, Christina Dodkin, Rajesh Mistry

Summary: This paper discusses the recommendations of the International Commission on Radiological Protection (ICRP) and the response of the Canadian Nuclear Safety Commission regarding occupational exposures. It focuses on the implementation of the reduced equivalent dose limit for the lens of the eye in various fields of radiological work in Canada. The discussions identified existing monitoring practices, technological gaps, and the anticipated compliance with the new dose limit.

JOURNAL OF RADIOLOGICAL PROTECTION (2022)

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Article Chemistry, Inorganic & Nuclear

Simplified efficiency calibration methods for semiconductor detectors used in criticality dosimetry

Victor V. Golovko

Summary: Simplified methods for determining the photo-peak efficiency of semiconductor HPGe detector system are proposed and verified. These methods can be used to estimate neutron dose from irradiated human blood in potential criticality events.

APPLIED RADIATION AND ISOTOPES (2022)

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Article Chemistry, Analytical

Ambient Dose and Dose Rate Measurement in SNOLAB Underground Laboratory at Sudbury, Ontario, Canada

Victor V. Golovko, Oleg Kamaev, Jiansheng Sun, Chris J. Jillings, Pierre Gorel, Eric Vazquez-Jauregui

Summary: This paper describes a system and experimental procedure using integrating passive detectors, such as TLDs, to measure ultra-low-level ambient dose equivalent rate values at the SNOLAB facility in Canada. The long exposure time of these detectors allows for better sensitivity in measuring ultra-low activity levels. The study concludes that TLDs provide reliable results in measuring the ultra-low-level environmental radiation background.

SENSORS (2023)

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Article Chemistry, Analytical

Unveiling Insights: Harnessing the Power of the Most-Frequent-Value Method for Sensor Data Analysis

Victor V. Golovko, Oleg Kamaev, Jiansheng Sun

Summary: The paper explores the application of Steiner's most-frequent-value (MFV) statistical method in sensor data analysis. It highlights the versatility and reliability of the MFV method in estimating environmental gamma background blue and characterizing ambient radiation levels. The study showcases the effectiveness of the MFV approach in evaluating background radiation and estimating confidence intervals through a bootstrapping approach.

SENSORS (2023)

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Article Physics, Particles & Fields

Precision measurement of the specific activity of Ar-39 in atmospheric argon with the DEAP-3600 detector

P. Adhikari, R. Ajaj, M. Alpizar-Venegas, P. -a. Amaudruz, J. Anstey, G. R. Araujo, D. J. Auty, M. Baldwin, M. Batygov, B. Beltran, H. Benmansour, C. E. Bina, J. Bonatt, W. Bonivento, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, M. Cadeddu, B. Cai, M. Cardenas-Montes, S. Cavuoti, M. Chen, Y. Chen, S. Choudhary, B. T. Cleveland, J. M. Corning, R. Crampton, D. Cranshaw, S. Daugherty, P. DelGobbo, K. Dering, P. Di Stefano, J. DiGioseffo, G. Dolganov, L. Doria, F. A. Duncan, M. Dunford, E. Ellingwood, A. Erlandson, S. S. Farahani, N. Fatemighomi, G. Fiorillo, S. Florian, A. Flower, R. J. Ford, R. Gagnon, D. Gallacher, P. Garcia Abia, S. Garg, P. Giampa, A. Gimenez-Alcazar, D. Goeldi, V. V. Golovko, P. Gorel, K. Graham, D. R. Grant, A. Grobov, A. L. Hallin, M. Hamstra, P. J. Harvey, S. Haskins, C. Hearns, J. Hu, J. Hucker, T. Hugues, A. Ilyasov, B. Jigmeddorj, C. J. Jillings, A. Joy, O. Kamaev, G. Kaur, A. Kemp, M. Kuzniak, F. La Zia, M. Lai, S. Langrock, B. Lehnert, A. Leonhardt, J. LePage-Bourbonnais, N. Levashko, J. Lidgard, T. Lindner, M. Lissia, J. Lock, L. Luzzi, I. Machulin, P. Majewski, A. Maru, J. Mason, A. B. McDonald, T. McElroy, T. McGinn, J. B. McLaughlin, R. Mehdiyev, C. Mielnichuk, L. Mirasola, J. Monroe, P. Nadeau, C. Nantais, C. Ng, A. J. Noble, E. O'Dwyer, G. Oliviero, C. Ouellet, S. Pal, D. Papi, P. Pasuthip, S. J. M. Peeters, M. Perry, V. Pesudo, E. Picciau, M. -c. Piro, T. R. Pollmann, F. Rad, E. T. Rand, C. Rethmeier, F. Retiere, I. Rodriguez Garcia, L. Roszkowski, J. B. Ruhland, R. Santorelli, F. G. Schuckman II, N. Seeburn, S. Seth, V. Shalamova, K. Singhrao, P. Skensved, N. J. T. Smith, B. Smith, K. Sobotkiewich, T. Sonley, J. Sosiak, J. Soukup, R. Stainforth, C. Stone, V. Strickland, M. Stringer, B. Sur, J. Tang, E. Vazquez-Jauregui, L. Veloce, S. Viel, B. Vyas, M. Walczak, J. Walding, M. Ward, S. Westerdale, J. Willis, A. Zuniga-Reyes

Summary: The specific activity of beta decay of Ar-39 in atmospheric argon was measured using the DEAP-3600 detector. The detector, located 2 km underground at SNOLAB, utilized 3269 +/- 24 kg of liquid argon distilled from the atmosphere for dark matter search. The detector's low background levels, achieved through the use of low background construction materials and pulse-shape discrimination, made it well-suited for measuring the decay of Ar-39. With 167 live-days of data, the measured specific activity at the time of atmospheric extraction was (0.964 +/- 0.001(stat) +/- 0.024(sys)) Bq/kg(atmAr), consistent with results from other experiments. A cross-check analysis using different event selection criteria and a different statistical method confirmed the result.

EUROPEAN PHYSICAL JOURNAL C (2023)

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Article Physics, Particles & Fields

Application of the most frequent value method for 39Ar half-life determination

Victor V. Golovko

Summary: This study applied an evaluation method supported by robust statistical analysis to historical measurements of Ar-39 half-life and obtained more reliable estimates. Additionally, the method to determine the half-life of Ar-39 using the specific activity of Ar-39 in atmospheric argon was discussed.

EUROPEAN PHYSICAL JOURNAL C (2023)

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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)

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