The Pair Internal Conversion Coefficient in the F+H′ Reaction and Measurements on the Gamma-Ray Spectrum

1939 ◽  
Vol 55 (3) ◽  
pp. 260-262 ◽  
Author(s):  
J. Halpern ◽  
H. R. Crane
Keyword(s):  
Internal Conversion ◽  
Gamma Ray ◽  
Conversion Coefficient ◽  
Internal Conversion Coefficient

The Decay of 169Yb

1972 ◽  
Vol 50 (19) ◽  
pp. 2348-2354 ◽  
Author(s):  
S. K. Sen ◽  
D. L. Salie ◽  
E. Tomchuk
Keyword(s):  
Direct Measurement ◽  
Gamma Rays ◽  
Internal Conversion ◽  
Gamma Ray ◽  
Conversion Coefficient ◽  
Coulomb Excitation ◽  
Internal Conversion Coefficient ◽  
Electron Capture Decay ◽  
Upper Limits ◽  
First Time

The decay of 169Yb was investigated using several Ge(Li) detectors of different sizes. The following gamma rays (energies in keV and intensities within brackets) were definitely identified with the 169Yb decay: 20.7 (0.66 ± 0.04), 63.1 (124 ± 5), 93.6 (7.2 ± 0.3), 109.8 (50 ± 2), 117.3 (0.08 ± 0.04), 118.2 (5.4 ± 0.2), 130.5 (34 ± 2), 156.7 (0.023 ± 0.004), 177.2(59 ± 3), 198.0 (100), 240.4 (0.33 ± 0.02), 261.0 (4.7 ± 0.2), and 307.7 (28 ± 1). The recently reported weak gamma-ray peaks at 515 (0.008 ± 0.002) and 625 (0.010 ± 0.002) were also observed and could not be ruled out as not belonging to 169Yb. The recently reported gamma-ray peaks at 140, 160, 207, 288, 295, 316, 320, 328, 355, 371, 379, 396, and 417 were detected and shown not to be from the decay of 169Yb while those at 218, 229, 285, 304, 335, 388, 411, and 425 were not observed and upper limits were placed on their intensities. The presence of very weak peaks at 515 and 625 establishes the formation of the 633 keV state of 169Tm following electron capture decay of 169Yb as reported by George. (This level has been previously observed only in Coulomb excitation of 169Tm.) The total internal conversion coefficient for the 20.7 keV transition was determined for the first time from the direct measurement of the gamma-ray intensity as 51 ± 10 corresponding to an M1 transition.

Directional correlations of gamma-ray cascades in 103Rh

1970 ◽  
Vol 48 (22) ◽  
pp. 2699-2706 ◽  
Author(s):  
M. C. George ◽  
Ambuj Mukerji
Keyword(s):  
Experimental Data ◽  
Angular Correlation ◽  
Correlation Functions ◽  
Internal Conversion ◽  
Gamma Ray ◽  
Conversion Coefficient ◽  
Internal Conversion Coefficient ◽  
Correlation Times

The directional correlations of the 557–53-keV and the 444–53-keV gamma-ray cascades observed in the decay of 103Ru have been studied. Dilute liquid sources (RuCl2 in HCl) of varying activity and of predetermined correlation times τc were used. The unperturbed angular correlation functions were evaluated to be:[Formula: see text]Spins and parities of the 650- and 537-keV levels of 103Rh deduced from the analysis of the experimental data and consistent with the restriction of the 53-keV gamma as an M1 transition, indicated by internal conversion coefficient results, are discussed.

Total internal conversion coefficient of the 260.9 keV (7+→3−) transition in198mTl

1986 ◽  
Vol 91 (4) ◽  
pp. 352-358 ◽  
Author(s):  
N. Venkateswara Rao ◽  
Ch. Suryanarayana ◽  
D. G. S. Narayana ◽  
S. Bhuloka Reddy ◽  
G. Satynarayana ◽  
...  
Keyword(s):  
Internal Conversion ◽  
Conversion Coefficient ◽  
Internal Conversion Coefficient

ON THE NUMERICAL CALCULATION OF THE INTERNAL CONVERSION IN THE K-SHELL—THE ELECTRIC DIPOLE CASE

1949 ◽  
Vol 27a (2) ◽  
pp. 17-25 ◽  
Author(s):  
J. P. Stanley
Keyword(s):  
Numerical Calculation ◽  
Electric Dipole ◽  
Internal Conversion ◽  
Conversion Coefficient ◽  
Internal Conversion Coefficient ◽  
Γ Radiation ◽  
Variable Formula

Hulme's formula for the internal conversion of γ-radiation is simplified and used to calculate the internal conversion coefficient in the electric dipole case for electrons in the K-shell. For each of the elements Z = 69, 74, 79, 84, 89, IK is calculated for 10 values of the variable [Formula: see text] and a table obtained by interpolation is given for θ = 0.05 to θ = 1.70.

Standardization and determination of the total internal conversion coefficient of In-111

2014 ◽  
Vol 87 ◽  
pp. 192-194 ◽  
Author(s):  
Izabela T. Matos ◽  
Marina F. Koskinas ◽  
Tatiane S. Nascimento ◽  
Ione M. Yamazaki ◽  
Mauro S. Dias
Keyword(s):  
Internal Conversion ◽  
Conversion Coefficient ◽  
Internal Conversion Coefficient
Sign in / Sign up

Export Citation Format

Share Document