Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure

T. A. D. Brown; P. Papka; B. R. Fulton; D. L. Watson; S. P. Fox; D. Groombridge; M. Freer; N. M. Clarke; N. I. Ashwood; N. Curtis; V. Ziman; P. McEwan; S. Ahmed; W. N. Catford; D. Mahboub; C. N. Timis; T. D. Baldwin; D. C. Weisser

doi:10.1103/PhysRevC.76.054605

Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure

T. A. D. Brown, P. Papka, B. R. Fulton, D. L. Watson, S. P. Fox, D. Groombridge, M. Freer, N. M. Clarke, N. I. Ashwood, N. Curtis, V. Ziman, P. McEwan, S. Ahmed, W. N. Catford, D. Mahboub, C. N. Timis, T. D. Baldwin, D. C. Weisser

Physics

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

Abstract

An experiment was performed to study the Be-9(Li-6,Li-6)Be-9(*) ->alpha+alpha+n reaction. This experiment was designed to study the breakup of Be-9 in an attempt to quantify the breakup yield for each of the decay channels (n+ Be-8 (g.s),n+ Be-8 (2+), and alpha+ He-5 (g.s)) from the low-lying states. The results suggest that the population of states in Be-9 from 1.68 to 11.28 MeV can be identified. Branching ratios for each of the breakup channels have been estimated for these states. These results are compared with earlier experiments and with theoretical predictions. They confirm the theoretical claim that the n+ Be-8 (2+) and alpha+ He-5 (g.s) channels increase in importance at higher excitation energies.

Original language	English
Article number	054605
Pages (from-to)	-
Number of pages	8
Journal	Physical Review C
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.76.054605
Publication status	Published - Nov 2007

Keywords

R-PROCESS
PHOTODISINTEGRATION
9BE

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10.1103/PhysRevC.76.054605

Cite this

Brown, T. A. D., Papka, P., Fulton, B. R., Watson, D. L., Fox, S. P., Groombridge, D., Freer, M., Clarke, N. M., Ashwood, N. I., Curtis, N., Ziman, V., McEwan, P., Ahmed, S., Catford, W. N., Mahboub, D., Timis, C. N., Baldwin, T. D., & Weisser, D. C. (2007). Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure. Physical Review C, 76(5), -. Article 054605. https://doi.org/10.1103/PhysRevC.76.054605

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title = "Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure",

abstract = "An experiment was performed to study the Be-9(Li-6,Li-6)Be-9(*) ->alpha+alpha+n reaction. This experiment was designed to study the breakup of Be-9 in an attempt to quantify the breakup yield for each of the decay channels (n+ Be-8 (g.s),n+ Be-8 (2+), and alpha+ He-5 (g.s)) from the low-lying states. The results suggest that the population of states in Be-9 from 1.68 to 11.28 MeV can be identified. Branching ratios for each of the breakup channels have been estimated for these states. These results are compared with earlier experiments and with theoretical predictions. They confirm the theoretical claim that the n+ Be-8 (2+) and alpha+ He-5 (g.s) channels increase in importance at higher excitation energies.",

keywords = "R-PROCESS, PHOTODISINTEGRATION, 9BE",

author = "Brown, {T. A. D.} and P. Papka and Fulton, {B. R.} and Watson, {D. L.} and Fox, {S. P.} and D. Groombridge and M. Freer and Clarke, {N. M.} and Ashwood, {N. I.} and N. Curtis and V. Ziman and P. McEwan and S. Ahmed and Catford, {W. N.} and D. Mahboub and Timis, {C. N.} and Baldwin, {T. D.} and Weisser, {D. C.}",

year = "2007",

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doi = "10.1103/PhysRevC.76.054605",

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Brown, TAD, Papka, P, Fulton, BR, Watson, DL, Fox, SP, Groombridge, D, Freer, M, Clarke, NM, Ashwood, NI, Curtis, N, Ziman, V, McEwan, P, Ahmed, S, Catford, WN, Mahboub, D, Timis, CN, Baldwin, TD & Weisser, DC 2007, 'Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure', Physical Review C, vol. 76, no. 5, 054605, pp. -. https://doi.org/10.1103/PhysRevC.76.054605

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T1 - Decay studies for states in Be-9 up to 11 MeV: Insights into the n+Be-8 and alpha+He-5 cluster structure

AU - Brown, T. A. D.

AU - Papka, P.

AU - Fulton, B. R.

AU - Watson, D. L.

AU - Fox, S. P.

AU - Groombridge, D.

AU - Freer, M.

AU - Clarke, N. M.

AU - Ashwood, N. I.

AU - Curtis, N.

AU - Ziman, V.

AU - McEwan, P.

AU - Ahmed, S.

AU - Catford, W. N.

AU - Mahboub, D.

AU - Timis, C. N.

AU - Baldwin, T. D.

AU - Weisser, D. C.

PY - 2007/11

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AB - An experiment was performed to study the Be-9(Li-6,Li-6)Be-9(*) ->alpha+alpha+n reaction. This experiment was designed to study the breakup of Be-9 in an attempt to quantify the breakup yield for each of the decay channels (n+ Be-8 (g.s),n+ Be-8 (2+), and alpha+ He-5 (g.s)) from the low-lying states. The results suggest that the population of states in Be-9 from 1.68 to 11.28 MeV can be identified. Branching ratios for each of the breakup channels have been estimated for these states. These results are compared with earlier experiments and with theoretical predictions. They confirm the theoretical claim that the n+ Be-8 (2+) and alpha+ He-5 (g.s) channels increase in importance at higher excitation energies.

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