Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure

L.A. Riley; B.A. Hartl; K.E. Hosier; D.C. Stoken; P. Adrich; T.R. Baugher; D. Bazin; B.A. Brown; J.M. Cook; Christian Aaen Diget; A. Gade; D.A. Garland; T. Glasmacher; A. Ratkiewicz; K.P. Siwek; D. Weisshaar; P.D. Cottle; K.W. Kemper; J.A. Tostevin

doi:10.1103/PhysRevC.79.051303

Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure

L.A. Riley, B.A. Hartl, K.E. Hosier, D.C. Stoken, P. Adrich, T.R. Baugher, D. Bazin, B.A. Brown, J.M. Cook, Christian Aaen Diget, A. Gade, D.A. Garland, T. Glasmacher, A. Ratkiewicz, K.P. Siwek, D. Weisshaar, P.D. Cottle, K.W. Kemper, J.A. Tostevin

Physics

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

Abstract

Neutron hole states in the exotic N=27 isotope Cl44 have been populated using the intermediate-energy single-neutron knockout reaction Be9(Cl45,Cl44)X. The momentum distribution of the residual Cl44 nuclei after direct population of the ground state is consistent with removal of an l=1 neutron. This observation and comparison with a shell-model calculation imply that p3/2 neutrons from above the N=28 major shell closure play important roles in the ground states of both Cl44 and Cl45. The present result is significant because Cl44 is even closer to the valley of stability than S43, where a similar result was recently obtained using a g-factor measurement.

Original language	English
Journal	Physical Review C
Volume	79
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.79.051303
Publication status	Published - 1 May 2009

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Riley, L. A., Hartl, B. A., Hosier, K. E., Stoken, D. C., Adrich, P., Baugher, T. R., Bazin, D., Brown, B. A., Cook, J. M., Diget, C. A., Gade, A., Garland, D. A., Glasmacher, T., Ratkiewicz, A., Siwek, K. P., Weisshaar, D., Cottle, P. D., Kemper, K. W., & Tostevin, J. A. (2009). Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure. Physical Review C, 79(5). https://doi.org/10.1103/PhysRevC.79.051303

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title = "Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure",

abstract = "Neutron hole states in the exotic N=27 isotope Cl44 have been populated using the intermediate-energy single-neutron knockout reaction Be9(Cl45,Cl44)X. The momentum distribution of the residual Cl44 nuclei after direct population of the ground state is consistent with removal of an l=1 neutron. This observation and comparison with a shell-model calculation imply that p3/2 neutrons from above the N=28 major shell closure play important roles in the ground states of both Cl44 and Cl45. The present result is significant because Cl44 is even closer to the valley of stability than S43, where a similar result was recently obtained using a g-factor measurement.",

author = "L.A. Riley and B.A. Hartl and K.E. Hosier and D.C. Stoken and P. Adrich and T.R. Baugher and D. Bazin and B.A. Brown and J.M. Cook and Diget, {Christian Aaen} and A. Gade and D.A. Garland and T. Glasmacher and A. Ratkiewicz and K.P. Siwek and D. Weisshaar and P.D. Cottle and K.W. Kemper and J.A. Tostevin",

year = "2009",

month = may,

day = "1",

doi = "10.1103/PhysRevC.79.051303",

language = "English",

volume = "79",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

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}

Riley, LA, Hartl, BA, Hosier, KE, Stoken, DC, Adrich, P, Baugher, TR, Bazin, D, Brown, BA, Cook, JM, Diget, CA, Gade, A, Garland, DA, Glasmacher, T, Ratkiewicz, A, Siwek, KP, Weisshaar, D, Cottle, PD, Kemper, KW & Tostevin, JA 2009, 'Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure', Physical Review C, vol. 79, no. 5. https://doi.org/10.1103/PhysRevC.79.051303

TY - JOUR

T1 - Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure

AU - Riley, L.A.

AU - Hartl, B.A.

AU - Hosier, K.E.

AU - Stoken, D.C.

AU - Adrich, P.

AU - Baugher, T.R.

AU - Bazin, D.

AU - Brown, B.A.

AU - Cook, J.M.

AU - Diget, Christian Aaen

AU - Gade, A.

AU - Garland, D.A.

AU - Glasmacher, T.

AU - Ratkiewicz, A.

AU - Siwek, K.P.

AU - Weisshaar, D.

AU - Cottle, P.D.

AU - Kemper, K.W.

AU - Tostevin, J.A.

PY - 2009/5/1

Y1 - 2009/5/1

N2 - Neutron hole states in the exotic N=27 isotope Cl44 have been populated using the intermediate-energy single-neutron knockout reaction Be9(Cl45,Cl44)X. The momentum distribution of the residual Cl44 nuclei after direct population of the ground state is consistent with removal of an l=1 neutron. This observation and comparison with a shell-model calculation imply that p3/2 neutrons from above the N=28 major shell closure play important roles in the ground states of both Cl44 and Cl45. The present result is significant because Cl44 is even closer to the valley of stability than S43, where a similar result was recently obtained using a g-factor measurement.

AB - Neutron hole states in the exotic N=27 isotope Cl44 have been populated using the intermediate-energy single-neutron knockout reaction Be9(Cl45,Cl44)X. The momentum distribution of the residual Cl44 nuclei after direct population of the ground state is consistent with removal of an l=1 neutron. This observation and comparison with a shell-model calculation imply that p3/2 neutrons from above the N=28 major shell closure play important roles in the ground states of both Cl44 and Cl45. The present result is significant because Cl44 is even closer to the valley of stability than S43, where a similar result was recently obtained using a g-factor measurement.

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U2 - 10.1103/PhysRevC.79.051303

DO - 10.1103/PhysRevC.79.051303

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SN - 0556-2813

VL - 79

JO - Physical Review C

JF - Physical Review C

IS - 5

ER -

Selectivity of the one-neutron knockout reaction on Cl45 and the collapse of the N=28 shell closure

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