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Author : Dale E. Hankins
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (21 download)
Download or read book Personnel Neutron Dosimetry Using Electrochemically Etched CR-39 Foils written by Dale E. Hankins and published by . This book was released on 1987 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Personnel Neutron Dosimetry Using CR-39 Foils written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We are using CR-39 foils for personnel nuetron dosimetry at the Lawrence Livermore National Laboratory. We have developed a three-step electrochemical etching procedure that includes low-frequency electrochemical etching at low frequency and at elevated temperatures. Our first etching step is at 60 Hz, 3000 V for 5 hours in a 60°C oven using 6.5 N KOH. The second etching step consists of an additional 23-minute etch at 60°C, 2.0 kHz, and 3000 V, which increases the track size and makes them relatively uniform in size. The final step is a 15-minute post etch at 60°C, which gives the tracks a smoother appearance. The foils are etched in etch chambers that can etch up to 24 foils. Several of these chambers can be used simultaneously with a single power supply. These chambers are rugged and have been used daily for over a year. 8 refs., 6 figs., 1 tab.
Author : Dale E. Hankins
Publisher :
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4.:/5 (355 download)
Download or read book Personnel Neutron Dosimetry Using Electrochemically Etched CR-39 Foils written by Dale E. Hankins and published by . This book was released on 1989 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philip James Silgen
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (319 download)
Download or read book An Orientation Study of Electrochemically Etched CR-39 Foils for Use in Personnel Neutron Dosimetry written by Philip James Silgen and published by . This book was released on 1994 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Personnel Neutron Dosimetry Applications of Track-size Distributions on Electrochemically Etched CR-39 Foils written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The track-size distribution on electrochemically etched CR-39 foils can be used to obtain some limited information on the incident neutron spectra. Track-size distributions on CR-39 foils can also be used to determine if the tracks were caused by neutrons or if they are merely background tracks (which have a significantly different track-size distribution). Identifying and discarding the high-background foils reduces the number of foils that must be etched. This also lowers the detection limit of the dosimetry system. We have developed an image analyzer program that can more efficiently determine the track density and track-size distribution, as well as read the laser-cut identification numbers on each foil. This new image analyzer makes the routine application of track-size distributions on CR-39 foils feasible. 2 refs., 3 figs.
Download or read book Personnel Neutron Dosimetry Using Hot, Low-frequency Electrochemical Etching written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed an electrochemical-etch procedure for the processing of large numbers of CR-39 dosimeters. Specially designed Homann-Type chambers can etch up to 24 CR-39 chips, or foils, at one time. In our two-step procedure, the second step, called blow-up, increases the tracks' size and makes them relatively uniform. The energy response is fairly flat from approx. 150 keV to 4.5 MeV, but drops by about a factor of three in the 13 to 16 MeV range. The sensitivity of the dosimetry system is 6 tracks/mrem with a background of 8 mrem, giving a lower limit of sensitivity of approximately 10 mrem for the dosimeter (when three foils are used). Because greater numbers of CR-39 foils can be accommodated at any one time, our procedure is quite efficient for operations with large numbers of dosimeters to be processed. 12 refs., 6 figs., 3 tabs.
Author : Lydia I. Tai
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (961 download)
Download or read book Use of CR-39 for Nuclear Criticality Accident Dosimetry and High Neutron Dose Monitoring written by Lydia I. Tai and published by . This book was released on 2016 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: CR-39 foils were irradiated as part of nuclear accident dosimetry experiments using the Godiva reactor at the Nevada National Security Site and the Caliban and Prospero reactors at the Valduc Centre for Nuclear Studies in France. The irradiated foils were chemically etched using the standard Lawrence Livermore National Laboratory process for personnel neutron dosimeters. Following chemical processing, the optical density of the CR-39 foils was measured using a transmission densitometer and found to be a function of the fast neutron dose as measured by the neutron activation components of the nuclear accident dosimeters. The relationship between fast neutron absorbed dose and optical density exponentially approaches a maximum at an absorbed dose of about 1 Gy. For the chemical etching process used in this study, neutron doses above 1 Gy did not further increase the optical density of the CR-39 foils.
Author : Steven William Doremus
Publisher :
ISBN 13 :
Total Pages : 139 pages
Book Rating : 4.:/5 (636 download)
Download or read book The Development of an Energy Independent Personnel Neutron Dosimeter Using CR-39 written by Steven William Doremus and published by . This book was released on 1989 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bozzano G Luisa
Publisher : Elsevier
ISBN 13 : 0323139752
Total Pages : 644 pages
Book Rating : 4.3/5 (231 download)
Download or read book The Dosimetry of Ionizing Radiation written by Bozzano G Luisa and published by Elsevier. This book was released on 2012-12-02 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: A continuation of the treatise The Dosimetry of Ionizing Radiation, Volume III builds upon the foundations of Volumes I and II and the tradition of the preceeding treatise Radiation Dosimetry. Volume III contains three comprehensive chapters on the applications of radiation dosimetry in particular research and medical settings, a chapter on unique and useful detectors, and two chapters on Monte Carlo techniques and their applications.
Author :
Publisher :
ISBN 13 :
Total Pages : 508 pages
Book Rating : 4.3/5 (91 download)
Download or read book Neutron Dosimetry written by and published by . This book was released on 1988 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Dose-equivalent Personnel Fast-neutron Dosimeter Using CR39 written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. Ing
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.3/5 (91 download)
Download or read book Neutron Dosimetry in Radiation Protection written by H. Ing and published by . This book was released on 1985 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John W. Baum
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.3/5 (91 download)
Download or read book Neutron Dosimetry written by John W. Baum and published by . This book was released on 1955 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Alan Poluha
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (11 download)
Download or read book Development of a Fast Neutron Dosimeter Using the Solid State Nuclear Track Detector CR-39 written by William Alan Poluha and published by . This book was released on 1986 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry Farrar
Publisher : ASTM International
ISBN 13 : 0803111843
Total Pages : 792 pages
Book Rating : 4.8/5 (31 download)
Download or read book Reactor Dosimetry written by Harry Farrar and published by ASTM International. This book was released on 1989 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. T. Bartlett
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.3/5 (91 download)
Download or read book Etched Track Neutron Dosimetry written by D. T. Bartlett and published by . This book was released on 1987 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 508 pages
Book Rating : 4.0/5 ( download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
