Depopulation of the Jπ = 9- isomer in 180Ta to the Jπ = 1+ ground state by Coulomb excitation

2001 ◽  
Vol 10 (2) ◽  
pp. 135-138 ◽  
Author(s):  
Ch. Schlegel ◽  
◽  
P. von Neumann-Cosel ◽  
J. de Boer ◽  
J. Gerl ◽  
...  
Keyword(s):  
Ground State ◽  
Coulomb Excitation

Coulomb excitation of rotational states and ground-state quadrupole moment forAm243

1981 ◽  
Vol 24 (6) ◽  
pp. 2723-2726 ◽  
Author(s):  
C. E. Bemis ◽  
F. K. McGowan ◽  
J. L. Ford ◽  
W. T. Milner ◽  
R. L. Robinson ◽  
...  
Keyword(s):  
Quadrupole Moment ◽  
Ground State ◽  
Coulomb Excitation ◽  
Rotational States

scholarly journals NEW STRUCTURES IN 178HF AND COULOMB EXCITATION OF ISOMERS

2011 ◽  
Vol 20 (02) ◽  
pp. 474-481 ◽  
Author(s):  
A.B. HAYES ◽  
D. CLINE ◽  
C. Y. WU ◽  
A.M. HURST ◽  
M.P. CARPENTER ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Ground State ◽  
Coulomb Excitation ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Particle Detector ◽  
Ground State Band ◽  
Rotational Bands ◽  
Coincidence Data ◽  
State Band

A 985 MeV 178 Hf beam was Coulomb excited by a 208 Pb target at the ATLAS accelerator of Argonne National Laboratory. Gammasphere and the CHICO particle detector recorded particle-γ coincidence data. The aim was to populate and determine the mechanism of previously observed Coulomb excitation of the Kπ = 6+ (t1/2 = 77 ns ), 8- (4 s ) and 16+ (31 y ) isomer bands. New rotational bands were identified including an aligned band which appears to mix with the ground-state band (GSB) and the γ-vibrational band above ~ 12 ħ of angular momentum. Newly observed γ-decay transitions into the three isomer bands may elucidate the K-mixing which allows Coulomb excitation of these isomer bands, but direct decays from the GSB into the 16+ isomer band have not yet been confirmed.

scholarly journals Triaxiality near the 110Ru ground state from Coulomb excitation

2017 ◽  
Vol 766 ◽  
pp. 334-338 ◽  
Author(s):  
D.T. Doherty ◽  
J.M. Allmond ◽  
R.V.F. Janssens ◽  
W. Korten ◽  
S. Zhu ◽  
...  
Keyword(s):  
Ground State ◽  
Coulomb Excitation

Coulomb excitation of 24Mg with 35Cl ions

1969 ◽  
Vol 47 (18) ◽  
pp. 1929-1940 ◽  
Author(s):  
D. Pelte ◽  
O. Häusser ◽  
T. K. Alexander ◽  
H. C. Evans
Keyword(s):  
Quadrupole Moment ◽  
Cross Section ◽  
Ground State ◽  
State Transition ◽  
Gamma Ray ◽  
Coulomb Excitation ◽  
Absolute Cross Section ◽  
Ground State Transition ◽  
Section Measurement ◽  
Anisotropy Measurement

The Coulomb excitation of a thick 24Mg target was studied with 35Cl ions of 61, 57, and 52 MeV. The absolute cross section and the anisotropy of the angular distribution of the ground state transition from the 1.369-MeV state in 24Mg was measured, and their dependence on B(E2) and the quadrupole moment, Q, of the 1.369-MeV state was calculated. A B(E2) of 24.5 ± 2.2 Weisskopf units (W.u.) was deduced from the line shape of the 1.369-MeV gamma ray observed with a 40 cm3 Ge(Li) detector. The quadrupole moment determined from the anisotropy measurement was Q = −0.38 ± 0.16 b. From the cross-section measurement, Q = −0.47 ± 0.19 b was obtained using B(E2) = 24.5 ± 2.2 W.u. The dependence of this value of Q on B(E2) is discussed.

Collective States in 151Sm

1971 ◽  
Vol 49 (24) ◽  
pp. 3166-3173 ◽  
Author(s):  
D. E. Nelson ◽  
D. G. Burke ◽  
W. B. Cook ◽  
J. C. Waddington
Keyword(s):  
Strong Coupling ◽  
Gamma Rays ◽  
Cross Sections ◽  
Rotational Band ◽  
Ground State ◽  
Coulomb Excitation ◽  
Coupling Model ◽  
Deuteron Scattering ◽  
Collective States

Inelastic deuteron scattering experiments with a target of 151Sm have been carried out with bombarding energies of 5 MeV and 12 MeV. The scattered deuterons were analyzed with a magnetic spectrograph and B(E2) values for the states populated were extracted from the ratios of inelastic to elastic cross sections. The gamma rays following Coulomb excitation of 151Sm by 50 MeV 35Cl ions were also studied with Ge(Li) detectors. Levels at 65.8 keV, 168.4 keV, and 295.1 keV were populated with B(E2) values of 0.80 e2(barn)2, 0.15 e2(barn)2, and 0.46 e2(barn)2 respectively. If it is assumed that the strong-coupling model is appropriate and that the level at 65.8 keV is the first excited member of a rotational band based on the I = 5/2 ground state, the measured B(E2) value corresponds to a deformation of β = 0.21. It must be noted, however, that the observed states do not satisfy the properties expected for a well-ordered ground-state rotational band.

Low lying levels in 81Br

1969 ◽  
Vol 47 (20) ◽  
pp. 2255-2259 ◽  
Author(s):  
M. Salomon ◽  
C. Hojvat
Keyword(s):  
Excited State ◽  
Energy Level ◽  
Excited States ◽  
Ground State ◽  
Level Scheme ◽  
Coulomb Excitation ◽  
Transition Probability ◽  
Energy Level Scheme ◽  
First Excited State

Coulomb excitation of Br targets and the reaction 80Se(p,γ)81Br were used to populate the low lying excited states of 81Br and an energy level scheme is proposed. The reduced transition probability from the ground state to the first excited state of 81Br (276 keV) has been measured to be B(E2) = 410 ± 40 e2 f4.

Static Quadrupole Moment of the Ground State ofCr53Determined by Coulomb Excitation

1973 ◽  
Vol 7 (4) ◽  
pp. 1413-1418 ◽  
Author(s):  
J. A. Thomson ◽  
R. P. Scharenberg ◽  
W. R. Lutz ◽  
R. D. Larsen
Keyword(s):  
Quadrupole Moment ◽  
Ground State ◽  
Coulomb Excitation ◽  
Static Quadrupole

Mutual excitation and reorientation of target and projectile in Coulomb excitation

1970 ◽  
Vol 48 (2) ◽  
pp. 240-243 ◽  
Author(s):  
O. Häusser ◽  
R. Y. Cusson
Keyword(s):  
Ground State ◽  
Point Charge ◽  
Coulomb Excitation ◽  
Polarized Beams ◽  
Usual Treatment ◽  
Coupled Channels ◽  
Special Case

In the usual treatment of Coulomb excitation, one of the interacting nuclei is considered as a point charge. In this paper we show, for the special case of E2 excitation, how multipoles of both target and projectile can be incorporated in a coupled-channels calculation. It is found that reorientation of the projectile ground state affects the results only if polarized beams are used.

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