THE 6.48-MEV LEVEL OF C11

1963 ◽  
Vol 41 (5) ◽  
pp. 784-792 ◽  
Author(s):  
D. W. Braben ◽  
P. J. Riley ◽  
G. C. Neilson
Keyword(s):  
Excited State ◽  
Ground State ◽  
State Transition ◽  
Time Of Flight ◽  
Coupling Model ◽  
Ground State Transition ◽  
Intermediate Coupling ◽  
Intermediate Coupling Model

The 6.48-Mev level of C11 has been studied by means of the B10(d,nγ)C11 reaction using time-of-flight techniques. The results show that the ratio of the ground-state transition to the cascade via the second excited state of C11 is 8 ± 1:1. Comparison is made with the predictions of the intermediate-coupling model.

LIFETIME MEASUREMENTS OF STATES IN O18 AND Ne22

1964 ◽  
Vol 42 (6) ◽  
pp. 1311-1323 ◽  
Author(s):  
M. A. Eswaran ◽  
C. Broude
Keyword(s):  
Excited State ◽  
Ground State ◽  
Doppler Shift ◽  
State Transition ◽  
Branching Ratios ◽  
Ground State Transition ◽  
Lifetime Measurements ◽  
Doppler Shift Attenuation ◽  
First Excited State ◽  
Doppler Shift Attenuation Method

Lifetime measurements have been made by the Doppler-shift attenuation method for the 1.98-, 3.63-, 3.92-, and 4.45-Mev states in O18 and the 1.28-, 3.34-, and 4.47-Mev states in Ne22, excited by the reactions Li7(C12, pγ)O18 and Li7(O16, pγ)Ne22. Branching ratios have also been measured. The results are tabulated.[Formula: see text]The decay of the 3.92-Mev state in O18 is 93.5% to the 1.98-Mev state and 6.5% to the ground state and of the 4.45-Mev state 74% to the 3.63-Mev state, 26% to the 1.98-Mev state, and less than 2% to the ground state. In Ne22, the ground-state transition from the 4.47-Mev state is less than 2% of the decay to the first excited state.

THE NEUTRON CAPTURE 7-RAYS FROM POTASSIUM

1953 ◽  
Vol 31 (6) ◽  
pp. 927-931 ◽  
Author(s):  
G. A. Bartholomew ◽  
B. B. Kinsey
Keyword(s):  
Excited State ◽  
Potassium Carbonate ◽  
Ground State ◽  
Neutron Capture ◽  
State Transition ◽  
Ground State Transition ◽  
Γ Rays ◽  
Γ Ray

The capture γ-rays from potassium have been re-examined with greater resolution than was used in previous experiments. The upper end of the spectrum has been carefully studied both with a sample of natural potassium carbonate and with another in which the potassium was enriched in K40. From a comparison of the spectra two γ-rays with energies of 9.39 ± 0.06 and 8.45 ± 0.02 Mev. are assigned to capture by that isotope. The strong γ-ray at 7.757 ± 0.008 Mev. previously ascribed to the ground state transition in K40 is now found to represent a transition to a low-lying excited state in that nucleus.

Decay of 143Eu

1974 ◽  
Vol 52 (10) ◽  
pp. 847-853 ◽  
Author(s):  
G. Kennedy ◽  
S. C. Gujrathi ◽  
P. F. Hinrichsen
Keyword(s):  
Ground State ◽  
Coupling Model ◽  
Intermediate Coupling ◽  
Ground State Spin ◽  
Reaction Data ◽  
Intermediate Coupling Model ◽  
Γ Rays ◽  
Γ Ray ◽  
State Spin ◽  
Good Agreement

A high resolution study of γ-ray transitions in 143Sm following the β+ decay of 143Eu has been made using Ge(Li) detectors. Fifty-seven γ rays are assigned to the decay of 143Eu, and the ground state spin of 143Eu is established as 5/2+. Spin and parity assignments are made on the basis of γ-ray branching, deduced log ft values, and by comparison with previous (p,d) reaction data. Good agreement between experiment and predictions of the intermediate coupling model suggests that this model adequately accounts for the low lying levels of 143Sm.

Optical Characterization Of GaAs/Si: Spectral Features in the Excitonic Region

1987 ◽  
Vol 91 ◽  
Author(s):  
S. Zemon ◽  
S. K. Shastry ◽  
C. Jagannath ◽  
P. Norris ◽  
G. Lambert
Keyword(s):  
Excited State ◽  
Ground State ◽  
State Transition ◽  
Optical Characterization ◽  
Spectral Width ◽  
Light Hole ◽  
Spectral Features ◽  
Ground State Transition ◽  
First Time

ABSTRACTUsing 4.2 K selective photoluminescence (PL) excitation and PL excitation spectroscopy, the n = 2 excited state of the light-hole exciton is observed for the first time in GaAs/Si. The excited state is about 3 meV above the ground state, similar to exciton results for GaAs/GaAs. A spectral width of 1.8 meV is observed for the ground state transition, the narrowest yet reported.

PROPERTIES OF LEVELS AT 6.69 AND 6.88–6.89 MeV IN 28Si

1966 ◽  
Vol 44 (5) ◽  
pp. 1087-1097 ◽  
Author(s):  
R. J. A. Levesque ◽  
R. W. Ollerhead ◽  
E. W. Blackmore ◽  
J. A. Kuehner
Keyword(s):  
Excited State ◽  
Alpha Particle ◽  
Ground State ◽  
State Transition ◽  
Gamma Ray ◽  
The Other ◽  
Ground State Transition ◽  
Angular Correlations ◽  
First Excited State ◽  
Strong Ground

Levels at 6.69, 6.88, and 6.89 MeV were observed in the 16O(16O, α)28Si reaction, and angular correlations were measured for the resulting gamma-ray transitions, using the geometry in which the alpha particle is detected at 0°. The level at 6.69 MeV had not been reported previously and was assigned spin and parity 0+. The doublet of levels at 6.88–6.89 MeV was not resolved in these measurements, but angular correlations of the gamma-ray transitions were possible, using spectrum subtraction techniques. One member of the doublet, previously assigned spin 3, has a strong ground-state transition; the angular correlation for this transition confirms a 3− assignment to this level. The other member of the doublet, which decays almost entirely to the first excited state, could not be assigned a spin on the basis of these measurements. However, taken in conjunction with other measurements, an assignment of 4+ is favored.

scholarly journals Laser spectroscopy of the 1001-nm ground-state transition in dysprosium

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
D. Studer ◽  
L. Maske ◽  
P. Windpassinger ◽  
K. Wendt
Keyword(s):  
Laser Spectroscopy ◽  
Ground State ◽  
State Transition ◽  
Ground State Transition

scholarly journals Measurement of the 2+→0+ ground-state transition in the β decay of F20

2019 ◽  
Vol 100 (6) ◽  
Author(s):  
O. S. Kirsebom ◽  
M. Hukkanen ◽  
A. Kankainen ◽  
W. H. Trzaska ◽  
D. F. Strömberg ◽  
...  
Keyword(s):  
Ground State ◽  
State Transition ◽  
Ground State Transition ◽  
Β Decay

scholarly journals Multipolarity of the2−→1−, ground-state transition inBi210via multivariable angular correlation analysis

2016 ◽  
Vol 94 (1) ◽  
Author(s):  
N. Cieplicka-Oryńczak ◽  
B. Szpak ◽  
S. Leoni ◽  
B. Fornal ◽  
D. Bazzacco ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Angular Correlation ◽  
Ground State ◽  
State Transition ◽  
Ground State Transition

Conduction band offset for Ga0.62In0.38NxAs0.991−xSb0.009∕GaNyAs1−y∕GaAs systems with the ground state transition at 1.5–1.65μm

2007 ◽  
Vol 90 (13) ◽  
pp. 131905 ◽  
Author(s):  
R. Kudrawiec ◽  
S. R. Bank ◽  
H. B. Yuen ◽  
H. Bae ◽  
M. A. Wistey ◽  
...  
Keyword(s):  
Conduction Band ◽  
Ground State ◽  
State Transition ◽  
Band Offset ◽  
Ground State Transition ◽  
Conduction Band Offset

Ground-State Transition Width of the 7.297-MeV Level inPb208

1966 ◽  
Vol 145 (3) ◽  
pp. 982-987 ◽  
Author(s):  
E. J. Dowdy ◽  
J. A. McIntyre
Keyword(s):  
Ground State ◽  
State Transition ◽  
Ground State Transition ◽  
Transition Width
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