High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos

D. Frekers; M. Alanssari; T. Adachi; B. T. Cleveland; M. Dozono; H. Ejiri; S. R. Elliott; H. Fujita; Y. Fujita; M. Fujiwara; K. Hatanaka; M. Holl; D. Ishikawa; H. Matsubara; H. Okamura; P. Puppe; K. Suda; A. Tamii; J. Thies; H. P. Yoshida

doi:10.1103/PhysRevC.94.014614

High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos

D. Frekers, M. Alanssari, T. Adachi, B. T. Cleveland, M. Dozono, H. Ejiri, S. R. Elliott, H. Fujita, Y. Fujita, M. Fujiwara, K. Hatanaka, M. Holl, D. Ishikawa, H. Matsubara, H. Okamura, P. Puppe, K. Suda, A. Tamii, J. Thies, H. P. Yoshida

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

A high-resolution (He3,t) charge-exchange experiment at an incident energy of 420 MeV has been performed on the double beta (ββ) decay nucleus Se82. A detailed Gamow-Teller (GT-) strength distribution in Br82 has been extracted, which provides information to the ββ-decay nuclear matrix elements. Three strong and isolated transitions, which are to the 75, 1484 and the 2087 keV states in Br82, are found to dominate the low-excitation region below ≈2.1 MeV. Above 2.1 MeV a sudden onset of a strong GT fragmentation is observed. The degree of fragmentation resembles a situation found in the neighboring A=76 system Ge76, whereas the observed concentration of strength in the three low-lying states is reminiscent of the heavier neighbors Zr96 and Mo100. The strong GT transition to the 75 keV (1+) state makes Se82 interesting for solar neutrino detection. The Se82(νe,e-)Br82 solar neutrino capture rate in a nonoscillation scenario is therefore evaluated to 668±12(stat)±60(sys) SNU, and some of the advantages of using selenium for solar neutrino studies are discussed.

Original language	English
Article number	014614
Journal	Physical Review C
Volume	94
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.94.014614
Publication status	Published - 21-07-2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevC.94.014614

Cite this

Frekers, D., Alanssari, M., Adachi, T., Cleveland, B. T., Dozono, M., Ejiri, H., Elliott, S. R., Fujita, H., Fujita, Y., Fujiwara, M., Hatanaka, K., Holl, M., Ishikawa, D., Matsubara, H., Okamura, H., Puppe, P., Suda, K., Tamii, A., Thies, J., & Yoshida, H. P. (2016). High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos. Physical Review C, 94(1), Article 014614. https://doi.org/10.1103/PhysRevC.94.014614

@article{21e4030591b04d9597871da9da949286,

title = "High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos",

abstract = "A high-resolution (He3,t) charge-exchange experiment at an incident energy of 420 MeV has been performed on the double beta (ββ) decay nucleus Se82. A detailed Gamow-Teller (GT-) strength distribution in Br82 has been extracted, which provides information to the ββ-decay nuclear matrix elements. Three strong and isolated transitions, which are to the 75, 1484 and the 2087 keV states in Br82, are found to dominate the low-excitation region below ≈2.1 MeV. Above 2.1 MeV a sudden onset of a strong GT fragmentation is observed. The degree of fragmentation resembles a situation found in the neighboring A=76 system Ge76, whereas the observed concentration of strength in the three low-lying states is reminiscent of the heavier neighbors Zr96 and Mo100. The strong GT transition to the 75 keV (1+) state makes Se82 interesting for solar neutrino detection. The Se82(νe,e-)Br82 solar neutrino capture rate in a nonoscillation scenario is therefore evaluated to 668±12(stat)±60(sys) SNU, and some of the advantages of using selenium for solar neutrino studies are discussed.",

author = "D. Frekers and M. Alanssari and T. Adachi and Cleveland, {B. T.} and M. Dozono and H. Ejiri and Elliott, {S. R.} and H. Fujita and Y. Fujita and M. Fujiwara and K. Hatanaka and M. Holl and D. Ishikawa and H. Matsubara and H. Okamura and P. Puppe and K. Suda and A. Tamii and J. Thies and Yoshida, {H. P.}",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) under grant no. FR 601/3-1. M.A. acknowledges the financial support from Al-Nahrain University/Ministry of Higher Education and Scientific Research of Iraq. Y.F. and A.T. were partly supported by MEXT, Japan under Grant No. 22540310. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = jul,

day = "21",

doi = "10.1103/PhysRevC.94.014614",

language = "English",

volume = "94",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "1",

}

Frekers, D, Alanssari, M, Adachi, T, Cleveland, BT, Dozono, M, Ejiri, H, Elliott, SR, Fujita, H, Fujita, Y, Fujiwara, M, Hatanaka, K, Holl, M, Ishikawa, D, Matsubara, H, Okamura, H, Puppe, P, Suda, K, Tamii, A, Thies, J & Yoshida, HP 2016, 'High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos', Physical Review C, vol. 94, no. 1, 014614. https://doi.org/10.1103/PhysRevC.94.014614

TY - JOUR

T1 - High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos

AU - Frekers, D.

AU - Alanssari, M.

AU - Adachi, T.

AU - Cleveland, B. T.

AU - Dozono, M.

AU - Ejiri, H.

AU - Elliott, S. R.

AU - Fujita, H.

AU - Fujita, Y.

AU - Fujiwara, M.

AU - Hatanaka, K.

AU - Holl, M.

AU - Ishikawa, D.

AU - Matsubara, H.

AU - Okamura, H.

AU - Puppe, P.

AU - Suda, K.

AU - Tamii, A.

AU - Thies, J.

AU - Yoshida, H. P.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) under grant no. FR 601/3-1. M.A. acknowledges the financial support from Al-Nahrain University/Ministry of Higher Education and Scientific Research of Iraq. Y.F. and A.T. were partly supported by MEXT, Japan under Grant No. 22540310. Publisher Copyright: © 2016 American Physical Society.

PY - 2016/7/21

Y1 - 2016/7/21

N2 - A high-resolution (He3,t) charge-exchange experiment at an incident energy of 420 MeV has been performed on the double beta (ββ) decay nucleus Se82. A detailed Gamow-Teller (GT-) strength distribution in Br82 has been extracted, which provides information to the ββ-decay nuclear matrix elements. Three strong and isolated transitions, which are to the 75, 1484 and the 2087 keV states in Br82, are found to dominate the low-excitation region below ≈2.1 MeV. Above 2.1 MeV a sudden onset of a strong GT fragmentation is observed. The degree of fragmentation resembles a situation found in the neighboring A=76 system Ge76, whereas the observed concentration of strength in the three low-lying states is reminiscent of the heavier neighbors Zr96 and Mo100. The strong GT transition to the 75 keV (1+) state makes Se82 interesting for solar neutrino detection. The Se82(νe,e-)Br82 solar neutrino capture rate in a nonoscillation scenario is therefore evaluated to 668±12(stat)±60(sys) SNU, and some of the advantages of using selenium for solar neutrino studies are discussed.

AB - A high-resolution (He3,t) charge-exchange experiment at an incident energy of 420 MeV has been performed on the double beta (ββ) decay nucleus Se82. A detailed Gamow-Teller (GT-) strength distribution in Br82 has been extracted, which provides information to the ββ-decay nuclear matrix elements. Three strong and isolated transitions, which are to the 75, 1484 and the 2087 keV states in Br82, are found to dominate the low-excitation region below ≈2.1 MeV. Above 2.1 MeV a sudden onset of a strong GT fragmentation is observed. The degree of fragmentation resembles a situation found in the neighboring A=76 system Ge76, whereas the observed concentration of strength in the three low-lying states is reminiscent of the heavier neighbors Zr96 and Mo100. The strong GT transition to the 75 keV (1+) state makes Se82 interesting for solar neutrino detection. The Se82(νe,e-)Br82 solar neutrino capture rate in a nonoscillation scenario is therefore evaluated to 668±12(stat)±60(sys) SNU, and some of the advantages of using selenium for solar neutrino studies are discussed.

UR - http://www.scopus.com/inward/record.url?scp=84979608145&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979608145&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.94.014614

DO - 10.1103/PhysRevC.94.014614

M3 - Article

AN - SCOPUS:84979608145

SN - 2469-9985

VL - 94

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 014614

ER -

High energy-resolution measurement of the Se 82 (He 3,t) Br 82 reaction for double- β decay and for solar neutrinos

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this