Neutron removal and cluster breakup of 14B and 14Be

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

doi:10.1103/PhysRevC.70.024608

Neutron removal and cluster breakup of ¹⁴B and ¹⁴Be

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

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Abstract

Measurements of the neutron removal and cluster breakup cross sections for the neutron-rich nuclei ¹⁴Be and ¹⁴B have been performed at 34.4 and 40.8 MeV/nucleon, respectively. Enhancement of the first chance cluster breakup cross section for ¹⁴Be compared to that of ¹⁴B provides evidence for a well-developed He cluster structure of the ground state of ¹⁴Be. Measurements of both the cross sections and decay-particle velocities suggest that multistep processes play an important role in the excitation and decay of both ¹⁴B and ¹⁴Be.

Original language	English
Article number	024608
Pages (from-to)	024608-1-024608-13
Journal	Physical Review C - Nuclear Physics
Volume	70
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.70.024608
State	Published - Aug 2004
Externally published	Yes

Funding

The authors are grateful to the technical and operations staff of LPC and GANIL for help in preparing and executing the experiments described here. This work was funded by the EPSRC (U. K.) and the IN2P3-CNRS (France). Additional support was provided by the Human Capital and Mobility Program of the European Community (Contract No. CHGE-CT94-0056).

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10.1103/PhysRevC.70.024608

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Ashwood, N. I., Freer, M., Angélique, J. C., Bouchat, V., Catford, W. N., Clarke, N. M., Curtis, N., Dorvaux, O., Hanappe, F., Kerckx, Y., Labiche, M., Lecouey, J. L., Marqués, F. M., Materna, T., Ninane, A., Normand, G., Orr, N. A., Pain, S., Soić, N., ... Ziman, V. A. (2004). Neutron removal and cluster breakup of ¹⁴B and ¹⁴Be. Physical Review C - Nuclear Physics, 70(2), 024608-1-024608-13. Article 024608. https://doi.org/10.1103/PhysRevC.70.024608

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title = "Neutron removal and cluster breakup of 14B and 14Be",

abstract = "Measurements of the neutron removal and cluster breakup cross sections for the neutron-rich nuclei 14Be and 14B have been performed at 34.4 and 40.8 MeV/nucleon, respectively. Enhancement of the first chance cluster breakup cross section for 14Be compared to that of 14B provides evidence for a well-developed He cluster structure of the ground state of 14Be. Measurements of both the cross sections and decay-particle velocities suggest that multistep processes play an important role in the excitation and decay of both 14B and 14Be.",

author = "Ashwood, {N. I.} and M. Freer and Ang{\'e}lique, {J. C.} and V. Bouchat and Catford, {W. N.} and Clarke, {N. M.} and N. Curtis and O. Dorvaux and F. Hanappe and Y. Kerckx and M. Labiche and Lecouey, {J. L.} 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 L. Stuttg{\'e} and C. Timis and A. Unshakova and Ziman, {V. A.}",

year = "2004",

month = aug,

doi = "10.1103/PhysRevC.70.024608",

language = "English",

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Ashwood, NI, Freer, M, Angélique, JC, Bouchat, V, Catford, WN, Clarke, NM, Curtis, N, Dorvaux, O, Hanappe, F, Kerckx, Y, Labiche, M, Lecouey, JL, Marqués, FM, Materna, T, Ninane, A, Normand, G, Orr, NA, Pain, S, Soić, N, Stuttgé, L, Timis, C, Unshakova, A & Ziman, VA 2004, 'Neutron removal and cluster breakup of ¹⁴B and ¹⁴Be', Physical Review C - Nuclear Physics, vol. 70, no. 2, 024608, pp. 024608-1-024608-13. https://doi.org/10.1103/PhysRevC.70.024608

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T1 - Neutron removal and cluster breakup of 14B and 14Be

AU - Ashwood, N. I.

AU - Freer, M.

AU - Angélique, J. C.

AU - Bouchat, V.

AU - Catford, W. N.

AU - Clarke, N. M.

AU - Curtis, N.

AU - Dorvaux, O.

AU - Hanappe, F.

AU - Kerckx, Y.

AU - Labiche, M.

AU - Lecouey, J. L.

AU - Marqués, F. M.

AU - Materna, T.

AU - Ninane, A.

AU - Normand, G.

AU - Orr, N. A.

AU - Pain, S.

AU - Soić, N.

AU - Stuttgé, L.

AU - Timis, C.

AU - Unshakova, A.

AU - Ziman, V. A.

PY - 2004/8

Y1 - 2004/8

N2 - Measurements of the neutron removal and cluster breakup cross sections for the neutron-rich nuclei 14Be and 14B have been performed at 34.4 and 40.8 MeV/nucleon, respectively. Enhancement of the first chance cluster breakup cross section for 14Be compared to that of 14B provides evidence for a well-developed He cluster structure of the ground state of 14Be. Measurements of both the cross sections and decay-particle velocities suggest that multistep processes play an important role in the excitation and decay of both 14B and 14Be.

AB - Measurements of the neutron removal and cluster breakup cross sections for the neutron-rich nuclei 14Be and 14B have been performed at 34.4 and 40.8 MeV/nucleon, respectively. Enhancement of the first chance cluster breakup cross section for 14Be compared to that of 14B provides evidence for a well-developed He cluster structure of the ground state of 14Be. Measurements of both the cross sections and decay-particle velocities suggest that multistep processes play an important role in the excitation and decay of both 14B and 14Be.

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ER -

Neutron removal and cluster breakup of ¹⁴B and ¹⁴Be

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