Photoelectric cross sections for 323 keV gamma rays in Cu, Zr, Ag, Sn, Ta, Au, and Pb

1977 ◽  
Vol 55 (18) ◽  
pp. 1592-1593 ◽  
Author(s):  
C. Ranganathaiah ◽  
Ramakrishna Gowda ◽  
B. Sanjeevaiah
Keyword(s):  
Gamma Rays ◽  
Cross Sections ◽  
Plastic Scintillation

Photoelectric cross sections for 323 keV gamma rays in Cu, Zr, Ag, Sn, Ta, Au, and Pb have been measured using a well-type plastic scintillation spectrometer. A comparison of these cross sections is made with the theoretical cross sections and the available measured values.

The Total and K Shell Photoelectric Cross Sections for 661.6 keV Gamma Rays

1975 ◽  
Vol 53 (9) ◽  
pp. 846-849 ◽  
Author(s):  
Ramakrishna Gowda ◽  
B. Sanjeevaiah
Keyword(s):  
Gamma Rays ◽  
Cross Sections ◽  
Plastic Scintillation ◽  
Predicted Values ◽  
Good Agreement

The total and K shell photoelectric cross sections at 145, 279.1, and 411.8 keV have been measured for different converter foils using the well-type plastic scintillation spectrometer. The results have been published elsewhere. Using the same method the total and K shell photoelectric cross sections in copper, zirconium, silver, tin, tantalum, gold, and lead at 661.6 keV have been measured and the results are compared with the available experimentally measured and theoretically predicted values. The results are found to be in good agreement with the theoretical values of Schmickley and Pratt and also of Scofield.

Photo-Disintegration Cross Sections of Deuterium and Beryllium for the Gamma-Rays of Sodium 24 and Gallium 72

1950 ◽  
Vol 80 (4) ◽  
pp. 637-642 ◽  
Author(s):  
Arthur H. Snell ◽  
E. C. Barker ◽  
R. L. Sternberg
Keyword(s):  
Gamma Rays ◽  
Cross Sections

Scattering cross-sections of gamma-rays in sulphur in the energy range (50÷400) keV

1982 ◽  
Vol 69 (3) ◽  
pp. 237-240 ◽  
Author(s):  
P. V. C. Sarma ◽  
D. R. K. Raju ◽  
K. Premchand ◽  
B. Mallikarjuna Rao ◽  
K. Parthasaradhi ◽  
...  
Keyword(s):  
Energy Range ◽  
Gamma Rays ◽  
Cross Sections ◽  
Scattering Cross ◽  
Scattering Cross Sections

APPLICATIONS OF THERMAL MULTIGATE DECAY PULSED NEUTRON LOGS IN UNUSUAL DOWNHOLE LOGGING ENVIRONMENTS

1985 ◽  
Vol 25 (1) ◽  
pp. 265
Author(s):  
Sami O. Ajam ◽  
V.E. Rahal
Keyword(s):  
Gamma Rays ◽  
Cross Sections ◽  
Gamma Ray ◽  
Decay Curve ◽  
Drill Pipe ◽  
Paper Briefly ◽  
Gamma Ray Detectors ◽  
Porosity Ratio ◽  
Pulsed Neutron ◽  
Capture Cross Sections

The Thermal Multigate Decay (TMD) logging system utilizes a pulsed 14 Mev generator and two gamma ray detectors to obtain measurements of the capture cross sections of downhole formations. The composite decay curve from both formation and borehole capture gamma rays is detected, and is separated into the two individual components : sigma formation and sigma borehole. The resulting sigma formation measurement is only minimally affected by borehole conditions, especially in cased wells.In addition to sigma formation and sigma borehole, the TMD system generates a dual-spaced porosity ratio and several other parameters which provide information on log quality, borehole parameters, and tool stability. These features can be used to assist the log analyst in understanding the down- hole borehole environment as well as formation characteristics. Under appropriate conditions, the TMD log can also provide production logging information relating to fluid movement in or near the wellbore.The paper briefly reviews the TMD logging system, after which it concentrates on log examples in unusual borehole conditions : logs run across intervals where borehole conditions change; logs run in air filled boreholes; logs run in badly washed out boreholes; logs run through stuck drill pipe/ collars; logs run in flowing wells. The supplemental TMD curves in these situations identify the presence of gravel packs and packers, changes in borehole fluid salinity, possible communication between zones, and water and oil producing perforations. Gas in the borehole can also be clearly differentiated from gas in the formation.

scholarly journals Partial and total thermal neutron capture cross sections for non-destructive assay and transmutation monitoring of 99Tc

2002 ◽  
Vol 90 (8) ◽  
Author(s):  
G. L. Molnár ◽  
T. Belgya ◽  
Zs. Révay ◽  
Syed M. Qaim
Keyword(s):  
Gamma Rays ◽  
Cross Sections ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Cold Neutron ◽  
Production Cross ◽  
Radioactive Product ◽  
Non Destructive ◽  
Decay Gamma ◽  
Capture Cross Sections

SummaryAccurate partial gamma-ray production cross sections were determined for the prompt and radioactive product decay gamma rays following cold neutron capture in

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