Investigation of discrete states and quasidiscrete structures observed in 150Sm and 152Sm using the (p,tγ) reaction

被引：7

作者：

Humby, P. ^{[1
,2
]}

Simon, A. ^{[1
,3
]}

Beausang, C. W. ^{[1
]}

Allmond, J. M. ^{[4
]}

Burke, J. T. ^{[5
]}

Casperson, R. J. ^{[5
]}

Chyzh, R. ^{[6
]}

Dag, M. ^{[6
]}

Gell, K. ^{[1
]}

Hughes, R. O. ^{[5
]}

Koglin, J. ^{[5
]}

McCleskey, E. ^{[6
]}

McCleskey, M. ^{[6
]}

Ota, S. ^{[5
]}

Ross, T. J. ^{[7
]}

Saastamoinen, A. ^{[6
]}

Tarlow, T. ^{[1
]}

Vyas, G. ^{[1
]}

机构：

[1] Univ Richmond, Dept Phys, Richmond, VA 23171 USA

[2] Univ Surrey, Dept Phys, Surrey GU2 7XH, England

[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[4] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[5] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[6] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA

[7] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 06期

基金：

美国国家科学基金会;

关键词：

2-NEUTRON TRANSFER-REACTIONS; HIGH-EXCITATION; EVEN ISOTOPES; P; T REACTION; TRANSITIONAL NUCLEI; HOLE STATES; ENERGY; SM;

D O I：

10.1103/PhysRevC.94.064314

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

New levels and gamma-ray transitions were identified in Sm-150,Sm-152 utilizing the (p, t) reaction and particle-gamma coincidence data. A large, peak-like structure observed between 2.3-3.0 MeV in excitation energy in the triton energy spectra was also investigated. The orbital angular-momentum transfer was probed by comparing the experimental angular distributions of the outgoing tritons to calculated distorted wave Born approximation curves. The angular distributions of the outgoing tritons populating the peak-like structure are remarkably similar in the two reactions and are significantly different from the angular distributions associated with the nearby continuum region. Relative partial cross sections for the observed levels, angle averaged between 34 and 58 degrees, were measured. In Sm-150, 39(4)% of the strength of the peak-like structure could be accounted for by the observed discrete states. This compares with a value of 93(15)% for Sm-152.

引用

页数：13