Breakup reaction studies of 10Be and 10,11B using a 10Be beam

S. Ahmed; M. Freer; J. C. Angélique; N. I. Ashwood; V. Bouchat; W. N. Catford; N. M. Clarke; N. Curtis; F. Hanappe; J. C. Lecouey; F. M. Marqués; T. Materna; A. Ninane; G. Normand; N. A. Orr; S. Pain; N. Soić; C. Timis; A. Unshakova; V. A. Ziman

doi:10.1103/PhysRevC.69.024303

Breakup reaction studies of ¹⁰Be and ^10,11B using a ¹⁰Be beam

S. Ahmed, M. Freer, J. C. Angélique, N. I. Ashwood, V. Bouchat, W. N. Catford, N. M. Clarke, N. Curtis, F. Hanappe, J. C. Lecouey, F. M. Marqués, T. Materna, A. Ninane, G. Normand, N. A. Orr, S. Pain, N. Soić, C. Timis, A. Unshakova, V. A. Ziman

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Abstract

The structure of ¹⁰Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction ¹²C(¹⁰Be,¹⁰Be* → ⁶He+^4/He)¹²C at E_beam=302 MeV. Excited states in ¹⁰Be were observed at 9.6±0.1 and 10.2±0.1 MeV. No evidence was observed for the population of the 4 ⁺ member of the ground-state band of ¹⁰Be indicating the shell-model-like structure of the ground state. In addition, the decay of ⁸Be, ¹⁰B, and ¹¹B, populated in the two-neutron, proton pickup, breakup and 1p pickup reactions, was reconstructed through the detection of coincident ⁴He+⁴He, ⁴He+⁶Li, and ⁴He+⁷Li particles. Cross sections for the formation of the ⁸Be, ⁹Be, ¹⁰B, and ¹¹B were also deduced. Contrary to expectations, the two-neutron removal results in the production of ⁸Be predominantly (80%) in the first excited (2⁺) state. This suggests that dynamical excitations play an important role in the neutron removal process.

Original language	English
Article number	024303
Pages (from-to)	243031-243039
Number of pages	9
Journal	Physical Review C - Nuclear Physics
Volume	69
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.69.024303
State	Published - Feb 2004
Externally published	Yes

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Ahmed, S., Freer, M., Angélique, J. C., Ashwood, N. I., Bouchat, V., Catford, W. N., Clarke, N. M., Curtis, N., Hanappe, F., Lecouey, J. C., Marqués, F. M., Materna, T., Ninane, A., Normand, G., Orr, N. A., Pain, S., Soić, N., Timis, C., Unshakova, A., & Ziman, V. A. (2004). Breakup reaction studies of ¹⁰Be and ^10,11B using a ¹⁰Be beam. Physical Review C - Nuclear Physics, 69(2), 243031-243039. Article 024303. https://doi.org/10.1103/PhysRevC.69.024303

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title = "Breakup reaction studies of 10Be and 10,11B using a 10Be beam",

abstract = "The structure of 10Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction 12C(10Be,10Be* → 6He+4/He)12C at Ebeam=302 MeV. Excited states in 10Be were observed at 9.6±0.1 and 10.2±0.1 MeV. No evidence was observed for the population of the 4 + member of the ground-state band of 10Be indicating the shell-model-like structure of the ground state. In addition, the decay of 8Be, 10B, and 11B, populated in the two-neutron, proton pickup, breakup and 1p pickup reactions, was reconstructed through the detection of coincident 4He+4He, 4He+6Li, and 4He+7Li particles. Cross sections for the formation of the 8Be, 9Be, 10B, and 11B were also deduced. Contrary to expectations, the two-neutron removal results in the production of 8Be predominantly (80%) in the first excited (2+) state. This suggests that dynamical excitations play an important role in the neutron removal process.",

author = "S. Ahmed and M. Freer and Ang{\'e}lique, {J. C.} and Ashwood, {N. I.} and V. Bouchat and Catford, {W. N.} and Clarke, {N. M.} and N. Curtis and F. Hanappe and Lecouey, {J. C.} and Marqu{\'e}s, {F. M.} and T. Materna and A. Ninane and G. Normand and Orr, {N. A.} and S. Pain and N. Soi{\'c} and C. Timis and A. Unshakova and Ziman, {V. A.}",

year = "2004",

month = feb,

doi = "10.1103/PhysRevC.69.024303",

language = "English",

volume = "69",

pages = "243031--243039",

journal = "Physical Review C - Nuclear Physics",

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Ahmed, S, Freer, M, Angélique, JC, Ashwood, NI, Bouchat, V, Catford, WN, Clarke, NM, Curtis, N, Hanappe, F, Lecouey, JC, Marqués, FM, Materna, T, Ninane, A, Normand, G, Orr, NA, Pain, S, Soić, N, Timis, C, Unshakova, A & Ziman, VA 2004, 'Breakup reaction studies of ¹⁰Be and ^10,11B using a ¹⁰Be beam', Physical Review C - Nuclear Physics, vol. 69, no. 2, 024303, pp. 243031-243039. https://doi.org/10.1103/PhysRevC.69.024303

TY - JOUR

T1 - Breakup reaction studies of 10Be and 10,11B using a 10Be beam

AU - Ahmed, S.

AU - Freer, M.

AU - Angélique, J. C.

AU - Ashwood, N. I.

AU - Bouchat, V.

AU - Catford, W. N.

AU - Clarke, N. M.

AU - Curtis, N.

AU - Hanappe, F.

AU - Lecouey, J. C.

AU - Marqués, F. M.

AU - Materna, T.

AU - Ninane, A.

AU - Normand, G.

AU - Orr, N. A.

AU - Pain, S.

AU - Soić, N.

AU - Timis, C.

AU - Unshakova, A.

AU - Ziman, V. A.

PY - 2004/2

Y1 - 2004/2

N2 - The structure of 10Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction 12C(10Be,10Be* → 6He+4/He)12C at Ebeam=302 MeV. Excited states in 10Be were observed at 9.6±0.1 and 10.2±0.1 MeV. No evidence was observed for the population of the 4 + member of the ground-state band of 10Be indicating the shell-model-like structure of the ground state. In addition, the decay of 8Be, 10B, and 11B, populated in the two-neutron, proton pickup, breakup and 1p pickup reactions, was reconstructed through the detection of coincident 4He+4He, 4He+6Li, and 4He+7Li particles. Cross sections for the formation of the 8Be, 9Be, 10B, and 11B were also deduced. Contrary to expectations, the two-neutron removal results in the production of 8Be predominantly (80%) in the first excited (2+) state. This suggests that dynamical excitations play an important role in the neutron removal process.

AB - The structure of 10Be has been investigated by inelastic scattering to states above the breakup threshold using the reaction 12C(10Be,10Be* → 6He+4/He)12C at Ebeam=302 MeV. Excited states in 10Be were observed at 9.6±0.1 and 10.2±0.1 MeV. No evidence was observed for the population of the 4 + member of the ground-state band of 10Be indicating the shell-model-like structure of the ground state. In addition, the decay of 8Be, 10B, and 11B, populated in the two-neutron, proton pickup, breakup and 1p pickup reactions, was reconstructed through the detection of coincident 4He+4He, 4He+6Li, and 4He+7Li particles. Cross sections for the formation of the 8Be, 9Be, 10B, and 11B were also deduced. Contrary to expectations, the two-neutron removal results in the production of 8Be predominantly (80%) in the first excited (2+) state. This suggests that dynamical excitations play an important role in the neutron removal process.

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U2 - 10.1103/PhysRevC.69.024303

DO - 10.1103/PhysRevC.69.024303

M3 - Article

AN - SCOPUS:1842854063

SN - 0556-2813

VL - 69

SP - 243031

EP - 243039

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 2

M1 - 024303

ER -

Breakup reaction studies of ¹⁰Be and ^10,11B using a ¹⁰Be beam

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