Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at Ep = 35 MeV

H. Orihara; A. Terakawa; K. Itoh; H. Suzuki; K. Kumagai; Y. Kikuchi; G. C. Jon; K. Ishii; T. Niizeki; H. Sagawa; H. Ohnuma

doi:10.1016/S0370-2693(02)02036-1

Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at E_p = 35 MeV

H. Orihara, A. Terakawa, K. Itoh, H. Suzuki, K. Kumagai, Y. Kikuchi, G. C. Jon, K. Ishii, T. Niizeki, H. Sagawa, H. Ohnuma

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6 Citations (Scopus)

Abstract

The (p, n) cross sections for the 0⁺ → 1⁺ excitation are studied experimentally at E_p = 35 MeV in eight nuclei with T_z = (N - Z)/2 = 1, ¹⁴C, ¹⁸O, ²²Ne, ²⁶Mg, ³⁰Si, ³⁴S, ³⁸Ar and ⁴²Ca. It is found that the peak (p, n) cross sections around θ ≈ 30° are proportional to the corresponding β⁺-decay rates of the T_z = -1 partners of the T = 1 multiplets. We propose a prescription to extract GT matrix elements in light nuclei from (p, n) cross sections using such proportionality. The method is applied to determine an unknown B(GT) matrix element in ²⁶Al, which is energetically inaccessible by β⁺-decay experiments.

Original language	English
Pages (from-to)	40-45
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	539
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(02)02036-1
Publication status	Published - 2002 Jul 11

Keywords

(p, n) reaction
Gamow-Teller matrix elements
Spin-isospin excitation
TOF measurement

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10.1016/S0370-2693(02)02036-1

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Orihara, H., Terakawa, A., Itoh, K., Suzuki, H., Kumagai, K., Kikuchi, Y., Jon, G. C., Ishii, K., Niizeki, T., Sagawa, H., & Ohnuma, H. (2002). Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at E_p = 35 MeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 539(1-2), 40-45. https://doi.org/10.1016/S0370-2693(02)02036-1

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title = "Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at Ep = 35 MeV",

abstract = "The (p, n) cross sections for the 0+ → 1+ excitation are studied experimentally at Ep = 35 MeV in eight nuclei with Tz = (N - Z)/2 = 1, 14C, 18O, 22Ne, 26Mg, 30Si, 34S, 38Ar and 42Ca. It is found that the peak (p, n) cross sections around θ ≈ 30° are proportional to the corresponding β+-decay rates of the Tz = -1 partners of the T = 1 multiplets. We propose a prescription to extract GT matrix elements in light nuclei from (p, n) cross sections using such proportionality. The method is applied to determine an unknown B(GT) matrix element in 26Al, which is energetically inaccessible by β+-decay experiments.",

keywords = "(p, n) reaction, Gamow-Teller matrix elements, Spin-isospin excitation, TOF measurement",

author = "H. Orihara and A. Terakawa and K. Itoh and H. Suzuki and K. Kumagai and Y. Kikuchi and Jon, {G. C.} and K. Ishii and T. Niizeki and H. Sagawa and H. Ohnuma",

note = "Funding Information: This work is supported by grant in aid for scientific research of Ministry of Education, Culture, Sports, and Science and Technology No. 13640257.",

year = "2002",

month = jul,

day = "11",

doi = "10.1016/S0370-2693(02)02036-1",

language = "English",

volume = "539",

pages = "40--45",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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publisher = "Elsevier",

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Orihara, H, Terakawa, A, Itoh, K, Suzuki, H, Kumagai, K, Kikuchi, Y, Jon, GC, Ishii, K, Niizeki, T, Sagawa, H & Ohnuma, H 2002, 'Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at E_p = 35 MeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 539, no. 1-2, pp. 40-45. https://doi.org/10.1016/S0370-2693(02)02036-1

TY - JOUR

T1 - Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at Ep = 35 MeV

AU - Orihara, H.

AU - Terakawa, A.

AU - Itoh, K.

AU - Suzuki, H.

AU - Kumagai, K.

AU - Kikuchi, Y.

AU - Jon, G. C.

AU - Ishii, K.

AU - Niizeki, T.

AU - Sagawa, H.

AU - Ohnuma, H.

N1 - Funding Information: This work is supported by grant in aid for scientific research of Ministry of Education, Culture, Sports, and Science and Technology No. 13640257.

PY - 2002/7/11

Y1 - 2002/7/11

N2 - The (p, n) cross sections for the 0+ → 1+ excitation are studied experimentally at Ep = 35 MeV in eight nuclei with Tz = (N - Z)/2 = 1, 14C, 18O, 22Ne, 26Mg, 30Si, 34S, 38Ar and 42Ca. It is found that the peak (p, n) cross sections around θ ≈ 30° are proportional to the corresponding β+-decay rates of the Tz = -1 partners of the T = 1 multiplets. We propose a prescription to extract GT matrix elements in light nuclei from (p, n) cross sections using such proportionality. The method is applied to determine an unknown B(GT) matrix element in 26Al, which is energetically inaccessible by β+-decay experiments.

AB - The (p, n) cross sections for the 0+ → 1+ excitation are studied experimentally at Ep = 35 MeV in eight nuclei with Tz = (N - Z)/2 = 1, 14C, 18O, 22Ne, 26Mg, 30Si, 34S, 38Ar and 42Ca. It is found that the peak (p, n) cross sections around θ ≈ 30° are proportional to the corresponding β+-decay rates of the Tz = -1 partners of the T = 1 multiplets. We propose a prescription to extract GT matrix elements in light nuclei from (p, n) cross sections using such proportionality. The method is applied to determine an unknown B(GT) matrix element in 26Al, which is energetically inaccessible by β+-decay experiments.

KW - (p, n) reaction

KW - Gamow-Teller matrix elements

KW - Spin-isospin excitation

KW - TOF measurement

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U2 - 10.1016/S0370-2693(02)02036-1

DO - 10.1016/S0370-2693(02)02036-1

M3 - Article

AN - SCOPUS:0037063137

SN - 0370-2693

VL - 539

SP - 40

EP - 45

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Gamow-Teller matrix elements in light nuclei and (p, n) cross sections at E_p = 35 MeV

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