Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics

P. D. Zecher, A. Galonsky, S. J. Gaff, J. J. Kruse, G. Kunde, E. Tryggestad, J. Wang, R. E. Warner, D. J. Morrissey, K. Ieki, Y. Iwata, F. Deák, Á Horváth, A. Kiss, Z. Seres, J. J. Kolata, J. Von Schwarzenberg, H. Schelin

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Abstract

We have made the first attempt at determining the 8Li(n, γ) 9Li cross section at astrophysical energies. This reaction competes with the 8Li(α,n)11B reaction in the inhomogeneous big bang model and with 8Li β decay in the r process. It may affect the primordial abundance and the stellar production of A>12 nuclei. Using a radioactive beam of 9Li and the Coulomb dissociation method we attempted to measure the cross section of the inverse reaction 9Li(γ, n)8Li. We report only an upper limit because we were unable to determine and subtract the nuclear dissociation. Through the detailed balance theorem, this lead to an upper limit for the cross section of interest, 8Li(n, γ) 9Li. The limit is 19±8 b for En = 0-500 keV or, when expressed as a reaction rate, 7200 cm3 s-1 mole-1.

Original languageEnglish
Pages (from-to)959-966
Number of pages8
JournalPhysical Review C - Nuclear Physics
Volume57
Issue number2
Publication statusPublished - Feb 1998

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astrophysics
kinematics
cross sections
dissociation
energy
reaction kinetics
theorems
nuclei
decay

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Zecher, P. D., Galonsky, A., Gaff, S. J., Kruse, J. J., Kunde, G., Tryggestad, E., ... Schelin, H. (1998). Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics. Physical Review C - Nuclear Physics, 57(2), 959-966.

Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics. / Zecher, P. D.; Galonsky, A.; Gaff, S. J.; Kruse, J. J.; Kunde, G.; Tryggestad, E.; Wang, J.; Warner, R. E.; Morrissey, D. J.; Ieki, K.; Iwata, Y.; Deák, F.; Horváth, Á; Kiss, A.; Seres, Z.; Kolata, J. J.; Von Schwarzenberg, J.; Schelin, H.

In: Physical Review C - Nuclear Physics, Vol. 57, No. 2, 02.1998, p. 959-966.

Research output: Contribution to journalArticle

Zecher, PD, Galonsky, A, Gaff, SJ, Kruse, JJ, Kunde, G, Tryggestad, E, Wang, J, Warner, RE, Morrissey, DJ, Ieki, K, Iwata, Y, Deák, F, Horváth, Á, Kiss, A, Seres, Z, Kolata, JJ, Von Schwarzenberg, J & Schelin, H 1998, 'Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics', Physical Review C - Nuclear Physics, vol. 57, no. 2, pp. 959-966.
Zecher PD, Galonsky A, Gaff SJ, Kruse JJ, Kunde G, Tryggestad E et al. Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics. Physical Review C - Nuclear Physics. 1998 Feb;57(2):959-966.
Zecher, P. D. ; Galonsky, A. ; Gaff, S. J. ; Kruse, J. J. ; Kunde, G. ; Tryggestad, E. ; Wang, J. ; Warner, R. E. ; Morrissey, D. J. ; Ieki, K. ; Iwata, Y. ; Deák, F. ; Horváth, Á ; Kiss, A. ; Seres, Z. ; Kolata, J. J. ; Von Schwarzenberg, J. ; Schelin, H. / Measurement of the 8Li(n, γ) 9Li cross section at astrophysical energies by reverse kinematics. In: Physical Review C - Nuclear Physics. 1998 ; Vol. 57, No. 2. pp. 959-966.
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abstract = "We have made the first attempt at determining the 8Li(n, γ) 9Li cross section at astrophysical energies. This reaction competes with the 8Li(α,n)11B reaction in the inhomogeneous big bang model and with 8Li β decay in the r process. It may affect the primordial abundance and the stellar production of A>12 nuclei. Using a radioactive beam of 9Li and the Coulomb dissociation method we attempted to measure the cross section of the inverse reaction 9Li(γ, n)8Li. We report only an upper limit because we were unable to determine and subtract the nuclear dissociation. Through the detailed balance theorem, this lead to an upper limit for the cross section of interest, 8Li(n, γ) 9Li. The limit is 19±8 b for En = 0-500 keV or, when expressed as a reaction rate, 7200 cm3 s-1 mole-1.",
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AU - Galonsky, A.

AU - Gaff, S. J.

AU - Kruse, J. J.

AU - Kunde, G.

AU - Tryggestad, E.

AU - Wang, J.

AU - Warner, R. E.

AU - Morrissey, D. J.

AU - Ieki, K.

AU - Iwata, Y.

AU - Deák, F.

AU - Horváth, Á

AU - Kiss, A.

AU - Seres, Z.

AU - Kolata, J. J.

AU - Von Schwarzenberg, J.

AU - Schelin, H.

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AB - We have made the first attempt at determining the 8Li(n, γ) 9Li cross section at astrophysical energies. This reaction competes with the 8Li(α,n)11B reaction in the inhomogeneous big bang model and with 8Li β decay in the r process. It may affect the primordial abundance and the stellar production of A>12 nuclei. Using a radioactive beam of 9Li and the Coulomb dissociation method we attempted to measure the cross section of the inverse reaction 9Li(γ, n)8Li. We report only an upper limit because we were unable to determine and subtract the nuclear dissociation. Through the detailed balance theorem, this lead to an upper limit for the cross section of interest, 8Li(n, γ) 9Li. The limit is 19±8 b for En = 0-500 keV or, when expressed as a reaction rate, 7200 cm3 s-1 mole-1.

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