Measurements of astrophysical neutron capture cross sections via the inverse reaction

Á Horváth, A. Galonsky, N. Carlin, F. Deák, T. Gomi, V. Guimaraes, Y. Higurashi, K. Hiroshi, K. Ieki, Y. Iwata, A. Kiss, J. Kolata, T. Rauscher, H. Schelin, J. von Schwarzenberg, Z. Seres, S. Takeuchi, S. Typel, R. Warner, J. Weiner

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Abstract

Neutron capture of short-lived isotopes can be important within several astrophysical environments. The laboratory investigation of these reactions can be difficult since these isotopes cannot form a target. We used radioactive beams and measured the inverse reaction instead. Particularly we used 15C and 9Li beams to measure the 14C(n,γ)15C, and 8Li(n,γ)9Li reactions. We determined the reaction rates within the astrophysically interesting temperature range. Our data for the 14C capture rises quickly up to 8μb and then it decreases by a factor of two at 1 MeV. We investigated neutron capture by 8Li which is one possible leak of the bridging reaction 8Li(α,n)11B of the A=8 gap. We found that this leak is lower than the theoretical expectations.

Original languageEnglish
JournalNuclear Physics A
Volume719
Issue number1-4
DOIs
Publication statusPublished - May 19 2003

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absorption cross sections
astrophysics
neutrons
isotopes
reaction kinetics
temperature

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Measurements of astrophysical neutron capture cross sections via the inverse reaction. / Horváth, Á; Galonsky, A.; Carlin, N.; Deák, F.; Gomi, T.; Guimaraes, V.; Higurashi, Y.; Hiroshi, K.; Ieki, K.; Iwata, Y.; Kiss, A.; Kolata, J.; Rauscher, T.; Schelin, H.; von Schwarzenberg, J.; Seres, Z.; Takeuchi, S.; Typel, S.; Warner, R.; Weiner, J.

In: Nuclear Physics A, Vol. 719, No. 1-4, 19.05.2003.

Research output: Contribution to journalArticle

Horváth, Á, Galonsky, A, Carlin, N, Deák, F, Gomi, T, Guimaraes, V, Higurashi, Y, Hiroshi, K, Ieki, K, Iwata, Y, Kiss, A, Kolata, J, Rauscher, T, Schelin, H, von Schwarzenberg, J, Seres, Z, Takeuchi, S, Typel, S, Warner, R & Weiner, J 2003, 'Measurements of astrophysical neutron capture cross sections via the inverse reaction', Nuclear Physics A, vol. 719, no. 1-4. https://doi.org/10.1016/S0375-9474(03)00951-5
Horváth, Á ; Galonsky, A. ; Carlin, N. ; Deák, F. ; Gomi, T. ; Guimaraes, V. ; Higurashi, Y. ; Hiroshi, K. ; Ieki, K. ; Iwata, Y. ; Kiss, A. ; Kolata, J. ; Rauscher, T. ; Schelin, H. ; von Schwarzenberg, J. ; Seres, Z. ; Takeuchi, S. ; Typel, S. ; Warner, R. ; Weiner, J. / Measurements of astrophysical neutron capture cross sections via the inverse reaction. In: Nuclear Physics A. 2003 ; Vol. 719, No. 1-4.
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AU - Horváth, Á

AU - Galonsky, A.

AU - Carlin, N.

AU - Deák, F.

AU - Gomi, T.

AU - Guimaraes, V.

AU - Higurashi, Y.

AU - Hiroshi, K.

AU - Ieki, K.

AU - Iwata, Y.

AU - Kiss, A.

AU - Kolata, J.

AU - Rauscher, T.

AU - Schelin, H.

AU - von Schwarzenberg, J.

AU - Seres, Z.

AU - Takeuchi, S.

AU - Typel, S.

AU - Warner, R.

AU - Weiner, J.

PY - 2003/5/19

Y1 - 2003/5/19

N2 - Neutron capture of short-lived isotopes can be important within several astrophysical environments. The laboratory investigation of these reactions can be difficult since these isotopes cannot form a target. We used radioactive beams and measured the inverse reaction instead. Particularly we used 15C and 9Li beams to measure the 14C(n,γ)15C, and 8Li(n,γ)9Li reactions. We determined the reaction rates within the astrophysically interesting temperature range. Our data for the 14C capture rises quickly up to 8μb and then it decreases by a factor of two at 1 MeV. We investigated neutron capture by 8Li which is one possible leak of the bridging reaction 8Li(α,n)11B of the A=8 gap. We found that this leak is lower than the theoretical expectations.

AB - Neutron capture of short-lived isotopes can be important within several astrophysical environments. The laboratory investigation of these reactions can be difficult since these isotopes cannot form a target. We used radioactive beams and measured the inverse reaction instead. Particularly we used 15C and 9Li beams to measure the 14C(n,γ)15C, and 8Li(n,γ)9Li reactions. We determined the reaction rates within the astrophysically interesting temperature range. Our data for the 14C capture rises quickly up to 8μb and then it decreases by a factor of two at 1 MeV. We investigated neutron capture by 8Li which is one possible leak of the bridging reaction 8Li(α,n)11B of the A=8 gap. We found that this leak is lower than the theoretical expectations.

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