Correlations in intermediate energy two-proton removal reactions

K. Wimmer; D. Bazin; A. Gade; J. A. Tostevin; T. Baugher; Z. Chajecki; D. Coupland; M. A. Famiano; T. K. Ghosh; G. F. Grinyer; R. Hodges; M. E. Howard; M. Kilburn; W. G. Lynch; B. Manning; K. Meierbachtol; P. Quarterman; A. Ratkiewicz; A. Sanetullaev; E. C. Simpson; S. R. Stroberg; M. B. Tsang; D. Weisshaar; J. Winkelbauer; R. Winkler; M. Youngs

doi:10.1103/PhysRevLett.109.202505

Correlations in intermediate energy two-proton removal reactions

K. Wimmer^*, D. Bazin, A. Gade, J. A. Tostevin, T. Baugher, Z. Chajecki, D. Coupland, M. A. Famiano, T. K. Ghosh, G. F. Grinyer, R. Hodges, M. E. Howard, M. Kilburn, W. G. Lynch, B. Manning, K. Meierbachtol, P. Quarterman, A. Ratkiewicz, A. Sanetullaev, E. C. SimpsonS. R. Stroberg, M. B. Tsang, D. Weisshaar, J. Winkelbauer, R. Winkler, M. Youngs

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

We report final-state-exclusive measurements of the light charged fragments in coincidence with Ne26 residual nuclei following the direct two-proton removal from a neutron-rich Mg28 secondary beam. A Dalitz-plot analysis and comparisons with simulations show that a majority of the triple-coincidence events with two protons display phase-space correlations consistent with the (two-body) kinematics of a spatially correlated pair-removal mechanism. The fraction of such correlated events, 56(12)%, is consistent with the fraction of the calculated cross section, 64%, arising from spin S=0 two-proton configurations in the entrance-channel (shell-model) Mg28 ground state wave function. This result promises access to an additional and more specific probe of the spin and spatial correlations of valence nucleon pairs in exotic nuclei produced as fast secondary beams.

Original language	English
Article number	202505
Journal	Physical Review Letters
Volume	109
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.109.202505
Publication status	Published - 16 Nov 2012
Externally published	Yes

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Wimmer, K., Bazin, D., Gade, A., Tostevin, J. A., Baugher, T., Chajecki, Z., Coupland, D., Famiano, M. A., Ghosh, T. K., Grinyer, G. F., Hodges, R., Howard, M. E., Kilburn, M., Lynch, W. G., Manning, B., Meierbachtol, K., Quarterman, P., Ratkiewicz, A., Sanetullaev, A., ... Youngs, M. (2012). Correlations in intermediate energy two-proton removal reactions. Physical Review Letters, 109(20), Article 202505. https://doi.org/10.1103/PhysRevLett.109.202505

@article{ee8b44ce3fb1421f8e56c94d3b5fd961,

title = "Correlations in intermediate energy two-proton removal reactions",

abstract = "We report final-state-exclusive measurements of the light charged fragments in coincidence with Ne26 residual nuclei following the direct two-proton removal from a neutron-rich Mg28 secondary beam. A Dalitz-plot analysis and comparisons with simulations show that a majority of the triple-coincidence events with two protons display phase-space correlations consistent with the (two-body) kinematics of a spatially correlated pair-removal mechanism. The fraction of such correlated events, 56(12)%, is consistent with the fraction of the calculated cross section, 64%, arising from spin S=0 two-proton configurations in the entrance-channel (shell-model) Mg28 ground state wave function. This result promises access to an additional and more specific probe of the spin and spatial correlations of valence nucleon pairs in exotic nuclei produced as fast secondary beams.",

author = "K. Wimmer and D. Bazin and A. Gade and Tostevin, {J. A.} and T. Baugher and Z. Chajecki and D. Coupland and Famiano, {M. A.} and Ghosh, {T. K.} and Grinyer, {G. F.} and R. Hodges and Howard, {M. E.} and M. Kilburn and Lynch, {W. G.} and B. Manning and K. Meierbachtol and P. Quarterman and A. Ratkiewicz and A. Sanetullaev and Simpson, {E. C.} and Stroberg, {S. R.} and Tsang, {M. B.} and D. Weisshaar and J. Winkelbauer and R. Winkler and M. Youngs",

year = "2012",

month = nov,

day = "16",

doi = "10.1103/PhysRevLett.109.202505",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "20",

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Wimmer, K, Bazin, D, Gade, A, Tostevin, JA, Baugher, T, Chajecki, Z, Coupland, D, Famiano, MA, Ghosh, TK, Grinyer, GF, Hodges, R, Howard, ME, Kilburn, M, Lynch, WG, Manning, B, Meierbachtol, K, Quarterman, P, Ratkiewicz, A, Sanetullaev, A, Simpson, EC, Stroberg, SR, Tsang, MB, Weisshaar, D, Winkelbauer, J, Winkler, R & Youngs, M 2012, 'Correlations in intermediate energy two-proton removal reactions', Physical Review Letters, vol. 109, no. 20, 202505. https://doi.org/10.1103/PhysRevLett.109.202505

TY - JOUR

T1 - Correlations in intermediate energy two-proton removal reactions

AU - Wimmer, K.

AU - Bazin, D.

AU - Gade, A.

AU - Tostevin, J. A.

AU - Baugher, T.

AU - Chajecki, Z.

AU - Coupland, D.

AU - Famiano, M. A.

AU - Ghosh, T. K.

AU - Grinyer, G. F.

AU - Hodges, R.

AU - Howard, M. E.

AU - Kilburn, M.

AU - Lynch, W. G.

AU - Manning, B.

AU - Meierbachtol, K.

AU - Quarterman, P.

AU - Ratkiewicz, A.

AU - Sanetullaev, A.

AU - Simpson, E. C.

AU - Stroberg, S. R.

AU - Tsang, M. B.

AU - Weisshaar, D.

AU - Winkelbauer, J.

AU - Winkler, R.

AU - Youngs, M.

PY - 2012/11/16

Y1 - 2012/11/16

N2 - We report final-state-exclusive measurements of the light charged fragments in coincidence with Ne26 residual nuclei following the direct two-proton removal from a neutron-rich Mg28 secondary beam. A Dalitz-plot analysis and comparisons with simulations show that a majority of the triple-coincidence events with two protons display phase-space correlations consistent with the (two-body) kinematics of a spatially correlated pair-removal mechanism. The fraction of such correlated events, 56(12)%, is consistent with the fraction of the calculated cross section, 64%, arising from spin S=0 two-proton configurations in the entrance-channel (shell-model) Mg28 ground state wave function. This result promises access to an additional and more specific probe of the spin and spatial correlations of valence nucleon pairs in exotic nuclei produced as fast secondary beams.

AB - We report final-state-exclusive measurements of the light charged fragments in coincidence with Ne26 residual nuclei following the direct two-proton removal from a neutron-rich Mg28 secondary beam. A Dalitz-plot analysis and comparisons with simulations show that a majority of the triple-coincidence events with two protons display phase-space correlations consistent with the (two-body) kinematics of a spatially correlated pair-removal mechanism. The fraction of such correlated events, 56(12)%, is consistent with the fraction of the calculated cross section, 64%, arising from spin S=0 two-proton configurations in the entrance-channel (shell-model) Mg28 ground state wave function. This result promises access to an additional and more specific probe of the spin and spatial correlations of valence nucleon pairs in exotic nuclei produced as fast secondary beams.

UR - http://www.scopus.com/inward/record.url?scp=84870223818&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.109.202505

DO - 10.1103/PhysRevLett.109.202505

M3 - Article

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 202505

ER -

Correlations in intermediate energy two-proton removal reactions

Abstract

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