scholarly journals Neutron Activation Foil and Thermoluminescent Dosimeter Responses to a Polyethylene Reflected Pulse of the CEA Valduc SILENE Critical Assembly

2016 ◽  
Author(s):  
Thomas Martin Miller ◽  
Cihangir Celik ◽  
Kimberly L. McMahan ◽  
Yi-kang Lee ◽  
Emmanuel Gagnier ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Critical Assembly ◽  
Thermoluminescent Dosimeter ◽  
Activation Foil

scholarly journals Neutron Activation Foil and Thermoluminescent Dosimeter Responses to a Lead Reflected Pulse of the CEA Valduc SILENE Critical Assembly

2016 ◽  
Author(s):  
Thomas Martin Miller ◽  
Cihangir Celik ◽  
Kimberly McMahan Isbell ◽  
Yi-kang Lee ◽  
Emmanuel Gagnier ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Critical Assembly ◽  
Thermoluminescent Dosimeter ◽  
Activation Foil

scholarly journals Neutron Activation and Thermoluminescent Detector Responses to a Bare Pulse of the CEA Valduc SILENE Critical Assembly

2016 ◽  
Author(s):  
Thomas Martin Miller ◽  
Cihangir Celik ◽  
Kimberly L. McMahan ◽  
Yi-kang Lee ◽  
Emmanuel Gagnier ◽  
...  
Keyword(s):  
Neutron Activation ◽  
Critical Assembly ◽  
Thermoluminescent Detector

scholarly journals Validation of MCNP NPP Activation Simulations for Decommissioning Studies by Analysis of NPP Neutron Activation Foil Measurement Campaigns

2016 ◽  
Vol 106 ◽  
pp. 05010
Author(s):  
Ben Volmert ◽  
Manuel Pantelias ◽  
R.K. Mutnuru ◽  
Erwin Neukaeter ◽  
Beat Bitterli
Keyword(s):  
Neutron Activation ◽  
Activation Foil ◽  
Measurement Campaigns

scholarly journals DETERMINATION OF LIMIT DETECTION OF THE ELEMENTS N, P, K, Si, Al, Fe, Cu, Cd, WITH FAST NEUTRON ACTIVATION USING NEUTRON GENERATOR

2010 ◽  
Vol 6 (2) ◽  
pp. 170-174
Author(s):  
Sunardi Sunardi ◽  
Muryono Muryono
Keyword(s):  
Neutron Activation ◽  
Fast Neutron ◽  
Gamma Spectrometry ◽  
Neutron Generator ◽  
Experimental Result ◽  
Activation Foil ◽  
Limit Detection ◽  
San Carlos ◽  
Made In

Determination of limit detection of the elements N, P, K, Si, Al, Fe, Cu, Cd, with fast neutron activation using neutron generator has been done.  Samples prepared from SRM 2704, N, P, K elements from MERCK, Cu, Cd, Al from activation foil made in San Carlos, weighted and packed for certain weight then iradiated during 30 minutes with 14 MeV fast neutron using the neutron generator and then counted with gamma spectrometry (accuspec).  At this research condition of neutron generator was set at current 1 mA that produced neutron flux about 5,47.107 n/cm2.s and  experimental result shown that the limit detection for the elements N, P, K, Si, Al, Fe, Cu, Cd are  2,44 ppm, 1,88 ppm, 2,15 ppm, 1,44 ppm, 1,26 ppm, 1,35 ppm, 1,05 ppm, 2,99 ppm, respectively.  The data  indicate that the limit detection or sensitivity of appliance of neutron generator to analyze the element is very good, which is feasible to get accreditation AANC laboratory using neutron generator.   Keywords: limit detection, AANC, neutron generator

scholarly journals Preanalysis of Neutron Activation Measurements in Shielding Penetrations at JET

2019 ◽  
Vol 23 ◽  
pp. 58
Author(s):  
I. E. Stamatelatos ◽  
T. Vasilopoulou ◽  
P. Batistoni ◽  
S. Conroy ◽  
B. Obryk ◽  
...  
Keyword(s):  
Activation Analysis ◽  
Neutron Activation ◽  
Count Rate ◽  
Neutron Fluence ◽  
Detailed Model ◽  
Plasma Sources ◽  
Computation Techniques ◽  
Activation Foil ◽  
Jet Plasma ◽  
Counting Statistics

In the present work, the preanalysis of activation foil experiments to determine neutron fluence rates along JET hall ducts and labyrinths is discussed. Simulations were performed using computational codes MCNPX and FISPACT-II and a detailed model of the JET hall, including the tokamak, biological shield and penetrations. The induced activity and detector count rate were predicted for activation foils placed at selected positions within the JET hall for Deuterium-Deuterium and Deuterium-Tritium JET plasma sources. The results of the calculations showed that satisfactory counting statistics can be obtained with the use of activation detectors and therefore activation analysis offers an unbiased and robust cross-benchmarking tool for comparison against other experimental and computation techniques applied in neutron streaming studies at JET.

Development of a Rapid Survey Method of Sampling and Analysis for Asbestos in Ambient Air

1972 ◽  
Vol 30 ◽  
pp. 630-631 ◽  
Author(s):  
R. E. Heffelfinger ◽  
C. W. Melton ◽  
D. L. Kiefer ◽  
W. M. Henry ◽  
R. J. Thompson
Keyword(s):  
Neutron Activation ◽  
Ambient Air ◽  
Survey Method ◽  
Potential Hazard ◽  
Transmission Microscopy ◽  
Comparative Analyses ◽  
Asbestos Fibers ◽  
Controlled Conditions ◽  
Unequivocal Identification ◽  
Identification And Quantification

A methodology has been developed and demonstrated which is capable of determining total amounts of asbestos fibers and fibrils in air ranging from as low as fractional nanograms per cubic meter (ng/m3) of air to several micrograms/m3. The method involves the collection of samples on an absolute filter and provides an unequivocal identification and quantification of the total asbestos contents including fibrils in the collected samples.The developed method depends on the trituration under controlled conditions to reduce the fibers to fibrils, separation of the asbestos fibrils from other collected air particulates (beneficiation), and the use of transmission microscopy for identification and quantification. Its validity has been tested by comparative analyses by neutron activation techniques. It can supply the data needed to set emissions criteria and to serve as a basis for assessing the potential hazard for asbestos pollution to the populace.

Critical Assembly

1993 ◽  
Author(s):  
Lillian Hoddeson ◽  
Paul W. Henriksen ◽  
Roger A. Meade ◽  
Catherine L. Westfall ◽  
Gordon Baym ◽  
...  
Keyword(s):  
Critical Assembly
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