Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties

H. Haba; F. Fan; D. Kaji; Y. Kasamatsu; H. Kikunaga; Y. Komori; N. Kondo; H. Kudo; K. Morimoto; K. Morita; M. Murakami; K. Nishio; J. P. Omtvedt; K. Ooe; Z. Qin; D. Sato; N. Sato; T. K. Sato; Y. Shigekawa; A. Shinohara; M. Takeyama; T. Tanaka; A. Toyoshima; K. Tsukada; Y. Wakabayashi; Y. Wang; S. Wulff; S. Yamaki; S. Yano; Y. Yasuda; T. Yokokita

doi:10.1103/PhysRevC.102.024625

Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties

H. Haba, F. Fan, D. Kaji, Y. Kasamatsu, H. Kikunaga, Y. Komori, N. Kondo, H. Kudo, K. Morimoto, K. Morita, M. Murakami, K. Nishio, J. P. Omtvedt, K. Ooe, Z. Qin, D. Sato, N. Sato, T. K. Sato, Y. Shigekawa, A. ShinoharaM. Takeyama, T. Tanaka, A. Toyoshima, K. Tsukada, Y. Wakabayashi, Y. Wang, S. Wulff, S. Yamaki, S. Yano, Y. Yasuda, T. Yokokita

Experimental Particle Physics

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Abstract

The nuclide Bh266 was produced in the Cm248(Na23,5n)Bh266 reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of Bh266 were investigated with a rotating wheel apparatus for α and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated α-α and α-SF decay chains, a total of 23 chains were assigned to Bh266 and its daughter nuclide Db262 and granddaughter Lr258. The half-life of Bh266 was measured to be T1/122=10.0-1.7+2.6s which is an order of magnitude longer than the literature data. The α-particle energies of Bh266 disperse widely in the range of Eα=8.62-9.40MeV. The maximum production cross section for the Cm248(Na23,5n)Bh266 reaction was determined to be σ=57±14 pb at 130.6 MeV, whereas the upper limit for the Cm248(Na23,4n)Bh267 reaction was σ≤14 pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.

Original language	English
Article number	024625
Journal	Physical Review C
Volume	102
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.102.024625
Publication status	Published - Aug 2020

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.102.024625

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Haba, H., Fan, F., Kaji, D., Kasamatsu, Y., Kikunaga, H., Komori, Y., Kondo, N., Kudo, H., Morimoto, K., Morita, K., Murakami, M., Nishio, K., Omtvedt, J. P., Ooe, K., Qin, Z., Sato, D., Sato, N., Sato, T. K., Shigekawa, Y., ... Yokokita, T. (2020). Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties. Physical Review C, 102(2), [024625]. https://doi.org/10.1103/PhysRevC.102.024625

Haba, H, Fan, F, Kaji, D, Kasamatsu, Y, Kikunaga, H, Komori, Y, Kondo, N, Kudo, H, Morimoto, K, Morita, K, Murakami, M, Nishio, K, Omtvedt, JP, Ooe, K, Qin, Z, Sato, D, Sato, N, Sato, TK, Shigekawa, Y, Shinohara, A, Takeyama, M, Tanaka, T, Toyoshima, A, Tsukada, K, Wakabayashi, Y, Wang, Y, Wulff, S, Yamaki, S, Yano, S, Yasuda, Y & Yokokita, T 2020, 'Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties', Physical Review C, vol. 102, no. 2, 024625. https://doi.org/10.1103/PhysRevC.102.024625

@article{a77b64938e4540c4b4187627f911189e,

title = "Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties",

abstract = "The nuclide Bh266 was produced in the Cm248(Na23,5n)Bh266 reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of Bh266 were investigated with a rotating wheel apparatus for α and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated α-α and α-SF decay chains, a total of 23 chains were assigned to Bh266 and its daughter nuclide Db262 and granddaughter Lr258. The half-life of Bh266 was measured to be T1/122=10.0-1.7+2.6s which is an order of magnitude longer than the literature data. The α-particle energies of Bh266 disperse widely in the range of Eα=8.62-9.40MeV. The maximum production cross section for the Cm248(Na23,5n)Bh266 reaction was determined to be σ=57±14 pb at 130.6 MeV, whereas the upper limit for the Cm248(Na23,4n)Bh267 reaction was σ≤14 pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.",

author = "H. Haba and F. Fan and D. Kaji and Y. Kasamatsu and H. Kikunaga and Y. Komori and N. Kondo and H. Kudo and K. Morimoto and K. Morita and M. Murakami and K. Nishio and Omtvedt, {J. P.} and K. Ooe and Z. Qin and D. Sato and N. Sato and Sato, {T. K.} and Y. Shigekawa and A. Shinohara and M. Takeyama and T. Tanaka and A. Toyoshima and K. Tsukada and Y. Wakabayashi and Y. Wang and S. Wulff and S. Yamaki and S. Yano and Y. Yasuda and T. Yokokita",

note = "Funding Information: This work was performed at the RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. The authors express their gratitude to the crew of the RIKEN linear accelerator for their invaluable assistance in the course of the experiment. This research was partially supported by the Ministry of Education, Culture, Sports, Science, and Technology, Japan, Grant-in-Aids No. 19002005, No. 26286082, and No. 17H01081, and by the National Natural Science Foundation, China, Grants No. 11675227 and No. 11079006. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = aug,

doi = "10.1103/PhysRevC.102.024625",

language = "English",

volume = "102",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties

AU - Haba, H.

AU - Fan, F.

AU - Kaji, D.

AU - Kasamatsu, Y.

AU - Kikunaga, H.

AU - Komori, Y.

AU - Kondo, N.

AU - Kudo, H.

AU - Morimoto, K.

AU - Morita, K.

AU - Murakami, M.

AU - Nishio, K.

AU - Omtvedt, J. P.

AU - Ooe, K.

AU - Qin, Z.

AU - Sato, D.

AU - Sato, N.

AU - Sato, T. K.

AU - Shigekawa, Y.

AU - Shinohara, A.

AU - Takeyama, M.

AU - Tanaka, T.

AU - Toyoshima, A.

AU - Tsukada, K.

AU - Wakabayashi, Y.

AU - Wang, Y.

AU - Wulff, S.

AU - Yamaki, S.

AU - Yano, S.

AU - Yasuda, Y.

AU - Yokokita, T.

N1 - Funding Information: This work was performed at the RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. The authors express their gratitude to the crew of the RIKEN linear accelerator for their invaluable assistance in the course of the experiment. This research was partially supported by the Ministry of Education, Culture, Sports, Science, and Technology, Japan, Grant-in-Aids No. 19002005, No. 26286082, and No. 17H01081, and by the National Natural Science Foundation, China, Grants No. 11675227 and No. 11079006. Publisher Copyright: © 2020 American Physical Society.

PY - 2020/8

Y1 - 2020/8

N2 - The nuclide Bh266 was produced in the Cm248(Na23,5n)Bh266 reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of Bh266 were investigated with a rotating wheel apparatus for α and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated α-α and α-SF decay chains, a total of 23 chains were assigned to Bh266 and its daughter nuclide Db262 and granddaughter Lr258. The half-life of Bh266 was measured to be T1/122=10.0-1.7+2.6s which is an order of magnitude longer than the literature data. The α-particle energies of Bh266 disperse widely in the range of Eα=8.62-9.40MeV. The maximum production cross section for the Cm248(Na23,5n)Bh266 reaction was determined to be σ=57±14 pb at 130.6 MeV, whereas the upper limit for the Cm248(Na23,4n)Bh267 reaction was σ≤14 pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.

AB - The nuclide Bh266 was produced in the Cm248(Na23,5n)Bh266 reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of Bh266 were investigated with a rotating wheel apparatus for α and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated α-α and α-SF decay chains, a total of 23 chains were assigned to Bh266 and its daughter nuclide Db262 and granddaughter Lr258. The half-life of Bh266 was measured to be T1/122=10.0-1.7+2.6s which is an order of magnitude longer than the literature data. The α-particle energies of Bh266 disperse widely in the range of Eα=8.62-9.40MeV. The maximum production cross section for the Cm248(Na23,5n)Bh266 reaction was determined to be σ=57±14 pb at 130.6 MeV, whereas the upper limit for the Cm248(Na23,4n)Bh267 reaction was σ≤14 pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.

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U2 - 10.1103/PhysRevC.102.024625

DO - 10.1103/PhysRevC.102.024625

M3 - Article

AN - SCOPUS:85092091844

SN - 2469-9985

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024625

ER -

Production of Bh 266 in the Cm 248 (Na 23,5n) Bh 266 reaction and its decay properties

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