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

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.

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

Measurement of the reorientation effect in 24Mg

1970 ◽  
Vol 48 (1) ◽  
pp. 35-45 ◽  
Author(s):  
O. Häusser ◽  
B. W. Hooton ◽  
D. Pelte ◽  
T. K. Alexander ◽  
H. C. Evans
Keyword(s):  
Excited State ◽  
Matrix Element ◽  
Quadrupole Moment ◽  
Cross Sections ◽  
Ground State ◽  
Coulomb Excitation ◽  
Rotational Model ◽  
First Excited State ◽  
Scattering Cross Sections ◽  
Static Quadrupole

The reorientation effect in Coulomb excitation with 62 MeV 35Cl projectiles was used to measure the static quadrupole moment of the first excited state in 24Mg. From a comparison of the inelastic scattering cross sections at CM scattering angles of 123.1° and 72.8°, a static quadrupole moment of Q = −0.243 ± 0.035 b was deduced. The E2 matrix element connecting the ground state and first excited state was also measured and corresponds to 20.3 ± 1.4 W.u. for the 2+ → 0+ transition. The results are compared with predictions of the rotational model.

Magnetic moment and electric quadrupole moment of the N ground state

1999 ◽  
Vol 451 (1-2) ◽  
pp. 11-18 ◽  
Author(s):  
H. Ogawa ◽  
K. Asahi ◽  
K. Sakai ◽  
A. Yoshimi ◽  
M. Tsuda ◽  
...  
Keyword(s):  
Quadrupole Moment ◽  
Magnetic Moment ◽  
Ground State ◽  
Electric Quadrupole ◽  
Electric Quadrupole Moment

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

scholarly journals Static Quadrupole Moment of the First Excited State of 28Si

1980 ◽  
Vol 33 (3) ◽  
pp. 509 ◽  
Author(s):  
RH Spear ◽  
MP Fewell
Keyword(s):  
Excited State ◽  
Quadrupole Moment ◽  
Coulomb Excitation ◽  
Mean Value ◽  
Experimental Result ◽  
Hartree Fock ◽  
Good Account ◽  
First Excited State ◽  
The Mean ◽  
Static Quadrupole

The reorientation effect in Coulomb excitation has been used to measure the static quadrupole moment Q2+ and B(E2;0+->2+) for the 1�779 MeV first excited state of 28Si. The results obtained are Q2+ = +15�5�3�4 efm2 and B(E2;0+->2+) = 326�20 e2fm4 ? The value obtained for Q2+ confirms the results of other recent determinations using the reorientation effect, and the B(E2; 0+ -> 2 +) value is in excellent agreement with the mean value deduced from previous lifetime determinations. Shell model and Hartree-Fock calculations of Q2+ both give a good account of the experimental result.

Coulomb excitation of ground band rotational states inBk249

1982 ◽  
Vol 25 (3) ◽  
pp. 1637-1640 ◽  
Author(s):  
C. E. Bemis ◽  
F. K. McGowan ◽  
J. L. C. Ford ◽  
W. T. Milner ◽  
R. L. Robinson ◽  
...  
Keyword(s):  
Coulomb Excitation ◽  
Rotational States ◽  
Ground Band

AN INTERPRETATION OF THE LOW-LYING EXCITED STATES OF Mg25 AND Al25

1958 ◽  
Vol 36 (3) ◽  
pp. 378-404 ◽  
Author(s):  
A. E. Litherland ◽  
H. McManus ◽  
D. A. Bromley ◽  
H. E. Gove ◽  
E. B. Paul
Keyword(s):  
Excited States ◽  
Ground State ◽  
Salient Feature ◽  
Negative Parity ◽  
State Transitions ◽  
Rotational Model ◽  
Rotational States ◽  
Γ Ray ◽  
Deuteron Stripping ◽  
Experimental Values

A description of the experimental results obtained for Mg25 and Al25 is given based upon the assumption that the excited nuclear states are rotational states. In Mg25 and Al25 members of four rotational bands can be identified. The band based on the ground state can be assigned K = 5/2 whilst the three excited-state bands, two positive parity and one negative parity, can be assigned K = 1/2. The dipole γ-ray transitions between the K = 1/2 bands and the ground state K = 5/2 band are forbidden on the rotational model and it is a salient feature of the γ-ray cascading in Mg25 and Al25 that the ground-state transitions are always amongst the weakest transitions from excited states assigned to K = 1/2 bands. Besides giving a quantitative account of the γ-ray decay of the excited states the rotational model also predicts the number and type of the bands observed. The experimental values of the Mg24(d, p)Mg25 deuteron stripping reduced widths can also be approximately predicted by the model.

scholarly journals Λ Doublet Radiation From Oh Excited Rotational States

1971 ◽  
Vol 2 ◽  
pp. 391-393
Author(s):  
B. Zuckerman
Keyword(s):  
Ground State ◽  
Rotational States ◽  
Maser Radiation

I will briefly summarize some recent observational results on Ʌ doublet maser radiation from OH excited rotational states. Combination of these results with interferometric observations should enable us to distinguish between the variety of pumping models that have been proposed for the ground state OH masers. I will not discuss pumping models since the time is limited and you would not believe me anyway.

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