Author: E. Tochilin
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 38
Book Description
Radioactive (a, n) neutron sources include Ra-Be, PuF4, and four PuBe13 sources. Comparative neutron emission rates were determined by two separate methods: (1) the manganese sulfate bath with appropriate corrections made for fast neutron escape or capture and for thermal neutron capture by the source; and (2) long counter measurements corrected for energy response and so rce anisotropy. Agreement to within 1 percent was obtained by the two independent methods. A Ra-Be source calibrated against the NBS neutron standard was used as a primary reference Spectral measurements of PuBe13 and PuF4 neutron sources were made with nuclear emulsions. By the use of cylindrical plastic and lead absorbers, an effort was made to moderate the PuBe13 spectrum and thereby obtain additional calibration points for instrument response studies. Spectral changes were initially studied with the doublemoderator technique, followed by later measurements with nuclear emulsions. From flux and spectral measurements of the primary and moderated radioactive sources, the first collision tissue dose was calculated and, in turn, compared to experimental measurements of absorbed dose with proportional counters designed according to the Bragg-Gray principle. (Author).
Flux and Spectral Measurements of Primary and Moderated Neutron Sources
Author: E. Tochilin
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 38
Book Description
Radioactive (a, n) neutron sources include Ra-Be, PuF4, and four PuBe13 sources. Comparative neutron emission rates were determined by two separate methods: (1) the manganese sulfate bath with appropriate corrections made for fast neutron escape or capture and for thermal neutron capture by the source; and (2) long counter measurements corrected for energy response and so rce anisotropy. Agreement to within 1 percent was obtained by the two independent methods. A Ra-Be source calibrated against the NBS neutron standard was used as a primary reference Spectral measurements of PuBe13 and PuF4 neutron sources were made with nuclear emulsions. By the use of cylindrical plastic and lead absorbers, an effort was made to moderate the PuBe13 spectrum and thereby obtain additional calibration points for instrument response studies. Spectral changes were initially studied with the doublemoderator technique, followed by later measurements with nuclear emulsions. From flux and spectral measurements of the primary and moderated radioactive sources, the first collision tissue dose was calculated and, in turn, compared to experimental measurements of absorbed dose with proportional counters designed according to the Bragg-Gray principle. (Author).
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 38
Book Description
Radioactive (a, n) neutron sources include Ra-Be, PuF4, and four PuBe13 sources. Comparative neutron emission rates were determined by two separate methods: (1) the manganese sulfate bath with appropriate corrections made for fast neutron escape or capture and for thermal neutron capture by the source; and (2) long counter measurements corrected for energy response and so rce anisotropy. Agreement to within 1 percent was obtained by the two independent methods. A Ra-Be source calibrated against the NBS neutron standard was used as a primary reference Spectral measurements of PuBe13 and PuF4 neutron sources were made with nuclear emulsions. By the use of cylindrical plastic and lead absorbers, an effort was made to moderate the PuBe13 spectrum and thereby obtain additional calibration points for instrument response studies. Spectral changes were initially studied with the doublemoderator technique, followed by later measurements with nuclear emulsions. From flux and spectral measurements of the primary and moderated radioactive sources, the first collision tissue dose was calculated and, in turn, compared to experimental measurements of absorbed dose with proportional counters designed according to the Bragg-Gray principle. (Author).
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: National Committee on Radiation Protection and Measurements (U.S.)
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 104
Book Description
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: National Committee on Radiation Protection and Measurements (U.S.)
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 104
Book Description
Fast Neutron Spectrum Measurements by Radioactivant Techniques
Author: Ross Joseph Wood
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 74
Book Description
Methods of Fast-Neutron Spectroscopy for Reactor Shielding
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: National Committee on Radiation Protection and Measurements (U.S.)
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 104
Book Description
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: United States. National Committee on Radiation Protection and Measurements
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 102
Book Description
Measurement of Absorbed Dose of Neutrons, and of Mixtures of Neutrons and Gamma Rays
Author: National Committee on Radiation Protection and Measurements (U.S.)
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 96
Book Description
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 96
Book Description
The Two-plate Method of Measuring Fast Neutron Energy Spectra when the Direction of the Incident Neutrons Cannot be Determined
Author: John E. Evans
Publisher:
ISBN:
Category : Fast neutrons
Languages : en
Pages : 56
Book Description
Publisher:
ISBN:
Category : Fast neutrons
Languages : en
Pages : 56
Book Description
Measurement of Absorbed Dose of Neutrons, and of Mixtures of Neutrons and Gamma Rays
Author: National Committee on Radiation Protection and Measurements (U.S.)
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 96
Book Description
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 96
Book Description