Determination of the 8B neutrino spectrum

W. T. Winter; K. E. Rehm; C. L. Jiang; I. Ahmad; S. J. Freedman; J. Greene; A. Heinz; D. Henderson; R. V.F. Janssens; E. F. Moore; G. Mukherjee; R. C. Pardo; M. Paul; T. Pennington; G. Savard; J. P. Schiffer; D. Seweryniak; G. Zinkann

doi:10.1016/j.nuclphysa.2004.09.029

Determination of the ⁸B neutrino spectrum

W. T. Winter^*, K. E. Rehm, C. L. Jiang, I. Ahmad, S. J. Freedman, J. Greene, A. Heinz, D. Henderson, R. V.F. Janssens, E. F. Moore, G. Mukherjee, R. C. Pardo, M. Paul, T. Pennington, G. Savard, J. P. Schiffer, D. Seweryniak, G. Zinkann

^*Corresponding author for this work

Racah Institute of Physics

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

3 Scopus citations

Abstract

We have measured the total energy of the alpha particles emitted following the beta-decay of ⁸B. The alpha particle energy spectrum is used to infer the shape of the ⁸B neutrino spectrum, which is an important input in the interpretation of experiments which detect energetic neutrinos from the Sun. The alpha-spectrum was measured with a new technique which involved the implantation of a beam of ⁸B ions into the mid-plane of a 91 μm thick planar Si detector, allowing both of the decay alpha particles to be observed in the same detector. Calibration was performed by implanting a beam of ²⁰Na ions, which provide alpha lines in the energy region of interest. The experimental results are compared with a previous precision measurement of the alpha spectrum, and are found to disagree.

Original language	English
Pages (from-to)	311-315
Number of pages	5
Journal	Nuclear Physics A
Volume	746
Issue number	1-4 SPEC.ISS.
DOIs	https://doi.org/10.1016/j.nuclphysa.2004.09.029
State	Published - 27 Dec 2004

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Winter, W. T., Rehm, K. E., Jiang, C. L., Ahmad, I., Freedman, S. J., Greene, J., Heinz, A., Henderson, D., Janssens, R. V. F., Moore, E. F., Mukherjee, G., Pardo, R. C., Paul, M., Pennington, T., Savard, G., Schiffer, J. P., Seweryniak, D., & Zinkann, G. (2004). Determination of the ⁸B neutrino spectrum. Nuclear Physics A, 746(1-4 SPEC.ISS.), 311-315. https://doi.org/10.1016/j.nuclphysa.2004.09.029

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title = "Determination of the 8B neutrino spectrum",

abstract = "We have measured the total energy of the alpha particles emitted following the beta-decay of 8B. The alpha particle energy spectrum is used to infer the shape of the 8B neutrino spectrum, which is an important input in the interpretation of experiments which detect energetic neutrinos from the Sun. The alpha-spectrum was measured with a new technique which involved the implantation of a beam of 8B ions into the mid-plane of a 91 μm thick planar Si detector, allowing both of the decay alpha particles to be observed in the same detector. Calibration was performed by implanting a beam of 20Na ions, which provide alpha lines in the energy region of interest. The experimental results are compared with a previous precision measurement of the alpha spectrum, and are found to disagree.",

author = "Winter, {W. T.} and Rehm, {K. E.} and Jiang, {C. L.} and I. Ahmad and Freedman, {S. J.} and J. Greene and A. Heinz and D. Henderson and Janssens, {R. V.F.} and Moore, {E. F.} and G. Mukherjee and Pardo, {R. C.} and M. Paul and T. Pennington and G. Savard and Schiffer, {J. P.} and D. Seweryniak and G. Zinkann",

year = "2004",

month = dec,

day = "27",

doi = "10.1016/j.nuclphysa.2004.09.029",

language = "אנגלית",

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journal = "Nuclear Physics A",

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Winter, WT, Rehm, KE, Jiang, CL, Ahmad, I, Freedman, SJ, Greene, J, Heinz, A, Henderson, D, Janssens, RVF, Moore, EF, Mukherjee, G, Pardo, RC, Paul, M, Pennington, T, Savard, G, Schiffer, JP, Seweryniak, D & Zinkann, G 2004, 'Determination of the ⁸B neutrino spectrum', Nuclear Physics A, vol. 746, no. 1-4 SPEC.ISS., pp. 311-315. https://doi.org/10.1016/j.nuclphysa.2004.09.029

TY - JOUR

T1 - Determination of the 8B neutrino spectrum

AU - Winter, W. T.

AU - Rehm, K. E.

AU - Jiang, C. L.

AU - Ahmad, I.

AU - Freedman, S. J.

AU - Greene, J.

AU - Heinz, A.

AU - Henderson, D.

AU - Janssens, R. V.F.

AU - Moore, E. F.

AU - Mukherjee, G.

AU - Pardo, R. C.

AU - Paul, M.

AU - Pennington, T.

AU - Savard, G.

AU - Schiffer, J. P.

AU - Seweryniak, D.

AU - Zinkann, G.

PY - 2004/12/27

Y1 - 2004/12/27

N2 - We have measured the total energy of the alpha particles emitted following the beta-decay of 8B. The alpha particle energy spectrum is used to infer the shape of the 8B neutrino spectrum, which is an important input in the interpretation of experiments which detect energetic neutrinos from the Sun. The alpha-spectrum was measured with a new technique which involved the implantation of a beam of 8B ions into the mid-plane of a 91 μm thick planar Si detector, allowing both of the decay alpha particles to be observed in the same detector. Calibration was performed by implanting a beam of 20Na ions, which provide alpha lines in the energy region of interest. The experimental results are compared with a previous precision measurement of the alpha spectrum, and are found to disagree.

AB - We have measured the total energy of the alpha particles emitted following the beta-decay of 8B. The alpha particle energy spectrum is used to infer the shape of the 8B neutrino spectrum, which is an important input in the interpretation of experiments which detect energetic neutrinos from the Sun. The alpha-spectrum was measured with a new technique which involved the implantation of a beam of 8B ions into the mid-plane of a 91 μm thick planar Si detector, allowing both of the decay alpha particles to be observed in the same detector. Calibration was performed by implanting a beam of 20Na ions, which provide alpha lines in the energy region of interest. The experimental results are compared with a previous precision measurement of the alpha spectrum, and are found to disagree.

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VL - 746

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JO - Nuclear Physics A

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Determination of the ⁸B neutrino spectrum

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