Two-Particle Separation Energies in the Superdeformed Well

A. N. Wilson; A. Korichi; S. Siem; A. Astier; D. Bazzacco; P. Bednarczyk; M. H. Bergstrom; S. Chmel; D. M. Cullen; P. M. Davidson; A. Goergen; F. Hannachi; H. Huebel; N. Kintz; T. Lauritsen; A. Lopez-Martens; S. Lunardi; S. Naguleswaran; B. M. Nyako; M. Rejmund; G. Schoenwasser; C. Schueck; J. F. Sharpey-Schafer; J. Timar; R. Wadsworth; J. Libert

doi:10.1088/1742-6596/312/9/092065

Two-Particle Separation Energies in the Superdeformed Well

A. N. Wilson^*, A. Korichi, S. Siem, A. Astier, D. Bazzacco, P. Bednarczyk, M. H. Bergstrom, S. Chmel, D. M. Cullen, P. M. Davidson, A. Goergen, F. Hannachi, H. Huebel, N. Kintz, T. Lauritsen, A. Lopez-Martens, S. Lunardi, S. Naguleswaran, B. M. Nyako, M. RejmundG. Schoenwasser, C. Schueck, J. F. Sharpey-Schafer, J. Timar, R. Wadsworth, J. Libert

^*Corresponding author for this work

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The location of nuclear closed shells, as evidenced through discontinuities in binding energy and one-and two-particle separation energy systematics, remains one of the simplest tests of global nuclear models. How shell gaps evolve, whether with increasing mass, increasing neutron: proton ratio or increasing deformation, is still uncertain, and it has recently been suggested that one must go beyond a static meanfield picture to include the effects of dynamic fluctuations in the nuclear shape even in the ground state. The identification of key properties which may distinguish between competing approaches is thus vital. Comparison of the binding energies of superdeformed nuclei in the A approximate to 190 region shows that two-proton separation energies are higher in the superdeformed state than in the normal state, despite the probably lower Coulomb barrier and lower total binding energy. Possible reasons for this difference are discussed. This somewhat counterintuitive result provides a critical test for global nuclear models.

Original language	English
Title of host publication	INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE
Place of Publication	BRISTOL
Publisher	IOP Publishing
Number of pages	6
ISBN (Print)	*****************
DOIs	https://doi.org/10.1088/1742-6596/312/9/092065
Publication status	Published - 2011
Event	International Nuclear Physics Conference (INPC) - Vancouver, Canada Duration: 4 Jul 2010 → 9 Jul 2010

Publication series

Name	Journal of Physics Conference Series
Publisher	IOP PUBLISHING LTD
Volume	312
ISSN (Print)	1742-6588

Conference

Conference	International Nuclear Physics Conference (INPC)
Country/Territory	Canada
City	Vancouver
Period	4/07/10 → 9/07/10

Keywords

STATES
HG-194
SHELL STRUCTURE
PARITY
BAND
LINE
SPINS
NUCLEUS
EXCITATION-ENERGIES
PB-194

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10.1088/1742-6596/312/9/092065

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Wilson, A. N., Korichi, A., Siem, S., Astier, A., Bazzacco, D., Bednarczyk, P., Bergstrom, M. H., Chmel, S., Cullen, D. M., Davidson, P. M., Goergen, A., Hannachi, F., Huebel, H., Kintz, N., Lauritsen, T., Lopez-Martens, A., Lunardi, S., Naguleswaran, S., Nyako, B. M., ... Libert, J. (2011). Two-Particle Separation Energies in the Superdeformed Well. In INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE (Journal of Physics Conference Series; Vol. 312). IOP Publishing. https://doi.org/10.1088/1742-6596/312/9/092065

@inproceedings{b624a055c40548c49380a76e481cbdec,

title = "Two-Particle Separation Energies in the Superdeformed Well",

abstract = "The location of nuclear closed shells, as evidenced through discontinuities in binding energy and one-and two-particle separation energy systematics, remains one of the simplest tests of global nuclear models. How shell gaps evolve, whether with increasing mass, increasing neutron: proton ratio or increasing deformation, is still uncertain, and it has recently been suggested that one must go beyond a static meanfield picture to include the effects of dynamic fluctuations in the nuclear shape even in the ground state. The identification of key properties which may distinguish between competing approaches is thus vital. Comparison of the binding energies of superdeformed nuclei in the A approximate to 190 region shows that two-proton separation energies are higher in the superdeformed state than in the normal state, despite the probably lower Coulomb barrier and lower total binding energy. Possible reasons for this difference are discussed. This somewhat counterintuitive result provides a critical test for global nuclear models.",

keywords = "STATES, HG-194, SHELL STRUCTURE, PARITY, BAND, LINE, SPINS, NUCLEUS, EXCITATION-ENERGIES, PB-194",

author = "Wilson, {A. N.} and A. Korichi and S. Siem and A. Astier and D. Bazzacco and P. Bednarczyk and Bergstrom, {M. H.} and S. Chmel and Cullen, {D. M.} and Davidson, {P. M.} and A. Goergen and F. Hannachi and H. Huebel and N. Kintz and T. Lauritsen and A. Lopez-Martens and S. Lunardi and S. Naguleswaran and Nyako, {B. M.} and M. Rejmund and G. Schoenwasser and C. Schueck and Sharpey-Schafer, {J. F.} and J. Timar and R. Wadsworth and J. Libert",

year = "2011",

doi = "10.1088/1742-6596/312/9/092065",

language = "English",

isbn = "*****************",

series = "Journal of Physics Conference Series",

publisher = "IOP Publishing",

booktitle = "INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE",

address = "United Kingdom",

note = "International Nuclear Physics Conference (INPC) ; Conference date: 04-07-2010 Through 09-07-2010",

}

Wilson, AN, Korichi, A, Siem, S, Astier, A, Bazzacco, D, Bednarczyk, P, Bergstrom, MH, Chmel, S, Cullen, DM, Davidson, PM, Goergen, A, Hannachi, F, Huebel, H, Kintz, N, Lauritsen, T, Lopez-Martens, A, Lunardi, S, Naguleswaran, S, Nyako, BM, Rejmund, M, Schoenwasser, G, Schueck, C, Sharpey-Schafer, JF, Timar, J, Wadsworth, R & Libert, J 2011, Two-Particle Separation Energies in the Superdeformed Well. in INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE. Journal of Physics Conference Series, vol. 312, IOP Publishing, BRISTOL, International Nuclear Physics Conference (INPC), Vancouver, Canada, 4/07/10. https://doi.org/10.1088/1742-6596/312/9/092065

TY - GEN

T1 - Two-Particle Separation Energies in the Superdeformed Well

AU - Wilson, A. N.

AU - Korichi, A.

AU - Siem, S.

AU - Astier, A.

AU - Bazzacco, D.

AU - Bednarczyk, P.

AU - Bergstrom, M. H.

AU - Chmel, S.

AU - Cullen, D. M.

AU - Davidson, P. M.

AU - Goergen, A.

AU - Hannachi, F.

AU - Huebel, H.

AU - Kintz, N.

AU - Lauritsen, T.

AU - Lopez-Martens, A.

AU - Lunardi, S.

AU - Naguleswaran, S.

AU - Nyako, B. M.

AU - Rejmund, M.

AU - Schoenwasser, G.

AU - Schueck, C.

AU - Sharpey-Schafer, J. F.

AU - Timar, J.

AU - Wadsworth, R.

AU - Libert, J.

PY - 2011

Y1 - 2011

N2 - The location of nuclear closed shells, as evidenced through discontinuities in binding energy and one-and two-particle separation energy systematics, remains one of the simplest tests of global nuclear models. How shell gaps evolve, whether with increasing mass, increasing neutron: proton ratio or increasing deformation, is still uncertain, and it has recently been suggested that one must go beyond a static meanfield picture to include the effects of dynamic fluctuations in the nuclear shape even in the ground state. The identification of key properties which may distinguish between competing approaches is thus vital. Comparison of the binding energies of superdeformed nuclei in the A approximate to 190 region shows that two-proton separation energies are higher in the superdeformed state than in the normal state, despite the probably lower Coulomb barrier and lower total binding energy. Possible reasons for this difference are discussed. This somewhat counterintuitive result provides a critical test for global nuclear models.

AB - The location of nuclear closed shells, as evidenced through discontinuities in binding energy and one-and two-particle separation energy systematics, remains one of the simplest tests of global nuclear models. How shell gaps evolve, whether with increasing mass, increasing neutron: proton ratio or increasing deformation, is still uncertain, and it has recently been suggested that one must go beyond a static meanfield picture to include the effects of dynamic fluctuations in the nuclear shape even in the ground state. The identification of key properties which may distinguish between competing approaches is thus vital. Comparison of the binding energies of superdeformed nuclei in the A approximate to 190 region shows that two-proton separation energies are higher in the superdeformed state than in the normal state, despite the probably lower Coulomb barrier and lower total binding energy. Possible reasons for this difference are discussed. This somewhat counterintuitive result provides a critical test for global nuclear models.

KW - STATES

KW - HG-194

KW - SHELL STRUCTURE

KW - PARITY

KW - BAND

KW - LINE

KW - SPINS

KW - NUCLEUS

KW - EXCITATION-ENERGIES

KW - PB-194

UR - http://www.scopus.com/inward/record.url?scp=80455127030&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/312/9/092065

DO - 10.1088/1742-6596/312/9/092065

M3 - Conference contribution

SN - *****************

T3 - Journal of Physics Conference Series

BT - INTERNATIONAL NUCLEAR PHYSICS CONFERENCE 2010 (INPC): NUCLEAR STRUCTURE

PB - IOP Publishing

CY - BRISTOL

T2 - International Nuclear Physics Conference (INPC)

Y2 - 4 July 2010 through 9 July 2010

ER -

Two-Particle Separation Energies in the Superdeformed Well

Abstract

Publication series

Conference

Keywords

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