Author: R. J. BreenPublisher:
ISBN:
Category : Beryllium
Languages : en
Pages : 56
Book Description
The Spectrum of Polonium-beryllium Neutron Sources
Author: R. J. BreenPublisher:
ISBN:
Category : Beryllium
Languages : en
Pages : 56
Book Description
Energy Spectrum of Polonium-beryllium Neutrons
Author: Hugh T. RichardsPublisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 16
Book Description
The Neutron Spectrum of a Plutonium-beryllium Source
Author: M. Edward AndersonPublisher:
ISBN:
Category : Beryllium
Languages : en
Pages : 40
Book Description
Preparation, Properties, and Availability of Polonium Neutron Sources
Author: U.S. Atomic Energy CommissionPublisher:
ISBN:
Category : Polonium
Languages : en
Pages : 24
Book Description
A Photographic Study of the Energy Spectrum of Neutrons from a Polonium-beryllium Source
Author: Walter B. BakerNeutrons from ([alpha], N) Sources
![Neutrons from ([alpha], N) Sources PDF](https://books.google.com/books/content/images/frontcover/PA_3J37gaukC?fife=w80-h100)
Author: Wilmot N. HessPublisher:
ISBN:
Category : Alpha rays
Languages : en
Pages : 46
Book Description
Gamma Radiation from Polonium Neutron Sources
Author: M. R. HertzPublisher:
ISBN:
Category : Gamma rays
Languages : en
Pages : 60
Book Description
Plutonium Beryllium Neutron Source as a Secondary Calibration Standard
Author: John A. DevanneyPublisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Plutonium-Beryllium (Pu-Be) neutron sources are calibrated with respect to total output, using a manganese-sulfate bath. When such sources are used as a point isotropic, secondary standard, inaccuracies occur due to the following reasons: (1) The neutron output is not isotropic, (2) the neutron output increases with time due to the build-up of Americium-241, resulting from the impurity of Plutonium-241, (3) the output spectrum is continuous from approximately 0.5 MeV to 10 MeV, (4) gamma rays exceed the number of neutrons emitted from the source. This report (1) presents the angular distribution of the neutron output of an 80 gram (4.81 curie) Plutonium-Beryllium neutron source, (2) shows that the increase in neutron output, due to the build-up of Americium-241 is 5.3 percent for a period of 43 months, (3) presents the neutron and gamma ray spectral distribution and intensity, (4) shows a neutron to gamma ray intensity ratio of 0.61:1 and a neutron to gamma ray dose (first collision-rads tissue) ratio of 9.36:1, (5) shows that a correction factor of 6.6 percent is required when the source is used as a point isotropic source of neutrons. (Author).
Neutron Yields of Several Light Elements Bombarded with Polonium Alpha Particles
Author: James H. RobertsPublisher:
ISBN:
Category : Alpha rays
Languages : en
Pages : 22
Book Description
Author: Alfred J. Moses