(γ,n) study of the isovector quadrupole resonance in 40Ca

D. A.  Sims; G. J. O'Keefe; R. P. Rassool; A. Kuzin; M. N. Thompson; Jan-Olof Adler; B-E Andersson; Kevin Fissum; Kurt Hansen; Lennart Isaksson; Björn Nilsson; H. Ruijter; Anders Sandell; Bent Schröder; J. R.M. Annand; G. I.  Crawford; P. D. Harty; J. C. McGeorge; G J Miller

doi:10.1103/PhysRevC.55.1288

(γ,n) study of the isovector quadrupole resonance in 40Ca

D. A. Sims, G. J. O'Keefe, R. P. Rassool, A. Kuzin, M. N. Thompson, Jan-Olof Adler, B-E Andersson, Kevin Fissum, Kurt Hansen, Lennart Isaksson, Björn Nilsson, H. Ruijter, Anders Sandell, Bent Schröder, J. R.M. Annand, G. I. Crawford, P. D. Harty, J. C. McGeorge, G J Miller

Department of Physics

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

Abstract

The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.

Original language	English
Pages (from-to)	1288-1294
Journal	Physical Review C: covering nuclear physics
Volume	55
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.55.1288
Publication status	Published - 1997

Subject classification (UKÄ)

Subatomic Physics

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10.1103/PhysRevC.55.1288

Nucleon Knockout with Electromagnetic Beams
Fissum, K. (Researcher)
1996/01/01 → 2017/12/31
Project: Research
Charge-Symmetry Breaking in the Giant Dipole Resonance Region
Fissum, K. (Researcher)
1994/01/01 → 2007/12/31
Project: Research

Cite this

Sims, D. A., O'Keefe, G. J., Rassool, R. P., Kuzin, A., Thompson, M. N., Adler, J.-O., Andersson, B.-E., Fissum, K., Hansen, K., Isaksson, L., Nilsson, B., Ruijter, H., Sandell, A., Schröder, B., Annand, J. R. M., Crawford, G. I., Harty, P. D., McGeorge, J. C., & Miller, G. J. (1997). (γ,n) study of the isovector quadrupole resonance in 40Ca. Physical Review C: covering nuclear physics, 55(3), 1288-1294. https://doi.org/10.1103/PhysRevC.55.1288

@article{95a7cc5f35aa42d6b0d758d79b5546ca,

title = "(γ,n) study of the isovector quadrupole resonance in 40Ca",

abstract = "The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.",

author = "Sims, {D. A.} and O'Keefe, {G. J.} and Rassool, {R. P.} and A. Kuzin and Thompson, {M. N.} and Jan-Olof Adler and B-E Andersson and Kevin Fissum and Kurt Hansen and Lennart Isaksson and Bj{\"o}rn Nilsson and H. Ruijter and Anders Sandell and Bent Schr{\"o}der and Annand, {J. R.M.} and Crawford, {G. I.} and Harty, {P. D.} and McGeorge, {J. C.} and Miller, {G J}",

year = "1997",

doi = "10.1103/PhysRevC.55.1288",

language = "English",

volume = "55",

pages = "1288--1294",

journal = "Physical Review C: covering nuclear physics",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

Sims, DA, O'Keefe, GJ, Rassool, RP, Kuzin, A, Thompson, MN, Adler, J-O, Andersson, B-E, Fissum, K, Hansen, K, Isaksson, L, Nilsson, B, Ruijter, H, Sandell, A, Schröder, B, Annand, JRM, Crawford, GI, Harty, PD, McGeorge, JC & Miller, GJ 1997, '(γ,n) study of the isovector quadrupole resonance in 40Ca', Physical Review C: covering nuclear physics, vol. 55, no. 3, pp. 1288-1294. https://doi.org/10.1103/PhysRevC.55.1288

TY - JOUR

T1 - (γ,n) study of the isovector quadrupole resonance in 40Ca

AU - Sims, D. A.

AU - O'Keefe, G. J.

AU - Rassool, R. P.

AU - Kuzin, A.

AU - Thompson, M. N.

AU - Adler, Jan-Olof

AU - Andersson, B-E

AU - Fissum, Kevin

AU - Hansen, Kurt

AU - Isaksson, Lennart

AU - Nilsson, Björn

AU - Ruijter, H.

AU - Sandell, Anders

AU - Schröder, Bent

AU - Annand, J. R.M.

AU - Crawford, G. I.

AU - Harty, P. D.

AU - McGeorge, J. C.

AU - Miller, G J

PY - 1997

Y1 - 1997

N2 - The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.

AB - The forward-to-backward asymmetry of neutrons emitted in the 40Ca(γ,n0) reaction was measured at photon energies in the range of 27–50 MeV. An energy-dependent asymmetry was observed that is interpreted as evidence of interference between the isovector quadrupole resonance and the giant dipole resonance. Data analysis in terms of semiclassical and direct-semidirect models estimate the isovector quadrupole resonance to be at an excitation energy of 31.0±1.5 MeV, with a width of 16.0±1.5 MeV, and exhausting most of the energy-weighted sum rule for the isovector quadrupole resonance.

U2 - 10.1103/PhysRevC.55.1288

DO - 10.1103/PhysRevC.55.1288

M3 - Article

SN - 2469-9985

VL - 55

SP - 1288

EP - 1294

JO - Physical Review C: covering nuclear physics

JF - Physical Review C: covering nuclear physics

IS - 3

ER -

(γ,n) study of the isovector quadrupole resonance in 40Ca

Abstract

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Projects

Nucleon Knockout with Electromagnetic Beams

Charge-Symmetry Breaking in the Giant Dipole Resonance Region

Cite this