Precision measurement of the decay rate of Be7 in host materials

Y. Nir-El; G. Haquin; Z. Yungrais; M. Hass; G. Goldring; S. K. Chamoli; B. S.Nara Singh; S. Lakshmi; U. Köster; N. Champault; A. Dorsival; G. Georgiev; V. N. Fedoseyev; B. A. Marsh; D. Schumann; G. Heidenreich; S. Teichmann

doi:10.1103/PhysRevC.75.012801

Precision measurement of the decay rate of Be7 in host materials

Y. Nir-El, G. Haquin, Z. Yungrais, M. Hass, G. Goldring, S. K. Chamoli, B. S.Nara Singh, S. Lakshmi, U. Köster, N. Champault, A. Dorsival, G. Georgiev, V. N. Fedoseyev, B. A. Marsh, D. Schumann, G. Heidenreich, S. Teichmann

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

35 Scopus citations

Abstract

A controlled and precise determination of the cross sections of the fusion reactions Be7(p,I )B8 and He3(He4,I )Be7, which play an important role in determining the solar neutrino flux, necessitates the knowledge of a precise value of the electron-capture half-life of Be7. This half-life may depend on the material hosting the Be7 atoms via small modifications of the electron density around the Be7 nucleus. In this brief communication we report on the measurement of Be7 implanted in four materials: copper, aluminum, sapphire, and PVC. The four results are consistent with a null host dependence within two standard deviations and their weighted average of 53.236(39) d agrees very well with the adopted value in the literature, 53.22(6) d. The present results may exhibit a slight (0.22%) increase of the half-life at room temperature for metals compared to insulators that requires further studies.

Original language	English
Article number	012801
Journal	Physical Review C - Nuclear Physics
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.75.012801
State	Published - 1 Jan 2007
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.75.012801

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Nir-El, Y., Haquin, G., Yungrais, Z., Hass, M., Goldring, G., Chamoli, S. K., Singh, B. S. N., Lakshmi, S., Köster, U., Champault, N., Dorsival, A., Georgiev, G., Fedoseyev, V. N., Marsh, B. A., Schumann, D., Heidenreich, G., & Teichmann, S. (2007). Precision measurement of the decay rate of Be7 in host materials. Physical Review C - Nuclear Physics, 75(1), Article 012801. https://doi.org/10.1103/PhysRevC.75.012801

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title = "Precision measurement of the decay rate of Be7 in host materials",

abstract = "A controlled and precise determination of the cross sections of the fusion reactions Be7(p,I )B8 and He3(He4,I )Be7, which play an important role in determining the solar neutrino flux, necessitates the knowledge of a precise value of the electron-capture half-life of Be7. This half-life may depend on the material hosting the Be7 atoms via small modifications of the electron density around the Be7 nucleus. In this brief communication we report on the measurement of Be7 implanted in four materials: copper, aluminum, sapphire, and PVC. The four results are consistent with a null host dependence within two standard deviations and their weighted average of 53.236(39) d agrees very well with the adopted value in the literature, 53.22(6) d. The present results may exhibit a slight (0.22%) increase of the half-life at room temperature for metals compared to insulators that requires further studies.",

author = "Y. Nir-El and G. Haquin and Z. Yungrais and M. Hass and G. Goldring and Chamoli, {S. K.} and Singh, {B. S.Nara} and S. Lakshmi and U. K{\"o}ster and N. Champault and A. Dorsival and G. Georgiev and Fedoseyev, {V. N.} and Marsh, {B. A.} and D. Schumann and G. Heidenreich and S. Teichmann",

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Nir-El, Y, Haquin, G, Yungrais, Z, Hass, M, Goldring, G, Chamoli, SK, Singh, BSN, Lakshmi, S, Köster, U, Champault, N, Dorsival, A, Georgiev, G, Fedoseyev, VN, Marsh, BA, Schumann, D, Heidenreich, G & Teichmann, S 2007, 'Precision measurement of the decay rate of Be7 in host materials', Physical Review C - Nuclear Physics, vol. 75, no. 1, 012801. https://doi.org/10.1103/PhysRevC.75.012801

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AU - Nir-El, Y.

AU - Haquin, G.

AU - Yungrais, Z.

AU - Hass, M.

AU - Goldring, G.

AU - Chamoli, S. K.

AU - Singh, B. S.Nara

AU - Lakshmi, S.

AU - Köster, U.

AU - Champault, N.

AU - Dorsival, A.

AU - Georgiev, G.

AU - Fedoseyev, V. N.

AU - Marsh, B. A.

AU - Schumann, D.

AU - Heidenreich, G.

AU - Teichmann, S.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - A controlled and precise determination of the cross sections of the fusion reactions Be7(p,I )B8 and He3(He4,I )Be7, which play an important role in determining the solar neutrino flux, necessitates the knowledge of a precise value of the electron-capture half-life of Be7. This half-life may depend on the material hosting the Be7 atoms via small modifications of the electron density around the Be7 nucleus. In this brief communication we report on the measurement of Be7 implanted in four materials: copper, aluminum, sapphire, and PVC. The four results are consistent with a null host dependence within two standard deviations and their weighted average of 53.236(39) d agrees very well with the adopted value in the literature, 53.22(6) d. The present results may exhibit a slight (0.22%) increase of the half-life at room temperature for metals compared to insulators that requires further studies.

AB - A controlled and precise determination of the cross sections of the fusion reactions Be7(p,I )B8 and He3(He4,I )Be7, which play an important role in determining the solar neutrino flux, necessitates the knowledge of a precise value of the electron-capture half-life of Be7. This half-life may depend on the material hosting the Be7 atoms via small modifications of the electron density around the Be7 nucleus. In this brief communication we report on the measurement of Be7 implanted in four materials: copper, aluminum, sapphire, and PVC. The four results are consistent with a null host dependence within two standard deviations and their weighted average of 53.236(39) d agrees very well with the adopted value in the literature, 53.22(6) d. The present results may exhibit a slight (0.22%) increase of the half-life at room temperature for metals compared to insulators that requires further studies.

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Precision measurement of the decay rate of Be7 in host materials

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