scholarly journals Performance evaluation of Compton suppression gamma spectrometer for low level environmental measurements

2014 ◽  
Vol 37 (1) ◽  
pp. 38 ◽  
Author(s):  
A Baburajan ◽  
DD Rao ◽  
PM Ravi ◽  
V Sudheendran ◽  
RM Tripathi
Keyword(s):  
Performance Evaluation ◽  
Compton Suppression ◽  
Gamma Spectrometer ◽  
Low Level

scholarly journals AN ASSOCIATIVE DATA PARALLEL COMPILATION MODEL FOR TIGHT INTEGRATION OF HIGH PERFORMANCE KNOWLEDGE RETRIEVAL AND COMPUTING

1994 ◽  
Vol 03 (01) ◽  
pp. 97-125 ◽  
Author(s):  
ARVIND K. BANSAL
Keyword(s):  
Performance Evaluation ◽  
High Performance ◽  
Loose Coupling ◽  
Abstract Machine ◽  
Data Movement ◽  
Left Hand ◽  
Low Level ◽  
Data Parallel ◽  
Data Alignment ◽  
And Performance

Associative Computation is characterized by intertwining of search by content and data parallel computation. An algebra for associative computation is described. A compilation based model and a novel abstract machine for associative logic programming are presented. The model uses loose coupling of left hand side of the program, treated as data, and right hand side of the program, treated as low level code. This representation achieves efficiency by associative computation and data alignment during goal reduction and during execution of low level abstract instructions. Data alignment reduces the overhead of data movement. Novel schemes for associative manipulation of aliased uninstantiated variables, data parallel goal reduction in the presence multiple occurrences of the same variables in a goal. The architecture, behavior, and performance evaluation of the model are presented.

Low-level gamma spectrometry using beta coincidence and Compton suppression

2004 ◽  
Vol 61 (2-3) ◽  
pp. 191-195 ◽  
Author(s):  
E.L Grigorescu ◽  
P.De Felice ◽  
Anamaria-Cristina Razdolescu ◽  
A Luca
Keyword(s):  
Gamma Spectrometry ◽  
Compton Suppression ◽  
Low Level

The performance determination of a Compton-suppression spectrometer and the measurement of the low level radioactive Samples

2013 ◽  
Vol 81 ◽  
pp. 128-131 ◽  
Author(s):  
Yuan-qing Fan ◽  
Shi-lian Wang ◽  
Qi Li ◽  
Yun-gang Zhao ◽  
Xin-jun Zhang ◽  
...  
Keyword(s):  
Compton Suppression ◽  
Low Level

scholarly journals Radioactivity of some natural and artificial radionuclides in coastal seawater at Ninh Thuan, Ba Ria - Vung Tau and Ca Mau provinces in 2018

2021 ◽  
Vol 10 (2) ◽  
pp. 44-51
Author(s):  
Tung Nguyen Dinh ◽  
Sieu Le Nhu ◽  
Phuc Nguyen Van ◽  
Phu Nguyen Van ◽  
Khoa Tran Dinh ◽  
...  
Keyword(s):  
Radiochemical Separation ◽  
Physicochemical Parameters ◽  
Separation Method ◽  
Precipitation Method ◽  
Gamma Spectrometer ◽  
Counting System ◽  
Low Level ◽  
Coastal Seawater ◽  
Beta Counting ◽  
Alpha Spectrometer

Radioactivities of some natural (Ra-226, Th-232, U-238, Po-210) and artificial (Cs-137, Sr-90 and Pu-239,240) radionuclides in coastal seawater at monitoring points of Ninh Thuan, Ba Ria - Vung Tau and Ca Mau provinces were analyzed quarterly in the year of 2018. Radioactivities of Ra-226, Th-232, U-238, and Cs-137 had been determined by simultaneous precipitation method and measured on low-level background gamma spectrometer; the radioactivities of Po-210 and Pu- 239,240 had been analyzed by radiochemical separation method and measured on alpha spectrometer; the radioactivity of Sr-90 had been analyzed by radiochemical separation method and measured on low-level background beta counting system. The ranges of radioactivities of Ra-226, Th-232, U-238, Po-210, Cs-137, Sr-90, and Pu-239,240 were 2.71 ÷ 15.91, 3.45 ÷ 35.93, 3.02 ÷ 21.47, 1.51÷ 6.74, 0.88 ÷ 1.68, 1.08 ÷ 1.86 and 0.0026 ÷ 0.0062 mBq/L, with the average values of 6.37, 12.67, 8.34, 3.29, 1.36, 1.46 and 0.0043 mBq/L, respectively. The results shown that the radioactivities of theabove-mentioned radionuclides varied between the seawaters at Ninh Thuan, Ba Ria - Vung Tau and Ca Mau seawater. Additionally, physicochemical parameters in seawater were also surveyed to assess their impact on the fluctuations of the above radionuclides.

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