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Improving the Efficiency of Photon Collection By Compton Rescue

Alexander W. Stevenson

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ISBN 10: 1249450918 / ISBN 13: 9781249450917
Published by BiblioScholar
New Condition: New Soft cover
From BuySomeBooks (Las Vegas, NV, U.S.A.)

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Paperback. 132 pages. Dimensions: 9.7in. x 7.4in. x 0.3in.A method to improve the efficiency of photon collection in thin planar HPGe detectors was investigated. The method involved implementing a second HPGe detector to collect Compton scattered photons from the primary detector and incorporating coincident interactions in the two detectors that sum to the full energy event into the energy spectrum. This method is termed Compton rescue because the Compton scattered photons make a partial energy deposition in the primary detector and are added back to the spectrum after being detected by the second detector. This research has implications on improving the efficiency of positron annihilation spectroscopy (PAS) techniques including the use of the method in angular correlation of annihilation radiation (ACAR) and Doppler-broadening of annihilation radiation (DBAR) applications. The effect of using Compton rescue on the energy and spatial resolution on these two PAS techniques was investigated. The research was conducted in two phases: simulation, in which a Monte-Carlo program was used to predict the effectiveness of the Compton rescue method based on photon interaction simulations, and experiment, in which a position-sensitive HPGe detector and a large coaxial HPGe detector were used to implement Compton rescue. A two-detector DBAR experiment on single-crystal Ni was conducted using the Compton rescue setup to illustrate its utility. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN. Bookseller Inventory # 9781249450917

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Bibliographic Details

Title: Improving the Efficiency of Photon ...

Publisher: BiblioScholar

Binding: Paperback

Book Condition:New

Book Type: Paperback

About this title

Synopsis:

A method to improve the efficiency of photon collection in thin planar HPGe detectors was investigated. The method involved implementing a second HPGe detector to collect Compton scattered photons from the primary detector and incorporating coincident interactions in the two detectors that sum to the full energy event into the energy spectrum. This method is termed "Compton rescue" because the Compton scattered photons make a partial energy deposition in the primary detector and are added back to the spectrum after being detected by the second detector. This research has implications on improving the efficiency of positron annihilation spectroscopy (PAS) techniques including the use of the method in angular correlation of annihilation radiation (ACAR) and Doppler-broadening of annihilation radiation (DBAR) applications. The effect of using Compton rescue on the energy and spatial resolution on these two PAS techniques was investigated. The research was conducted in two phases: simulation, in which a Monte-Carlo program was used to predict the effectiveness of the Compton rescue method based on photon interaction simulations, and experiment, in which a position-sensitive HPGe detector and a large coaxial HPGe detector were used to implement Compton rescue. A two-detector DBAR experiment on single-crystal Ni was conducted using the Compton rescue setup to illustrate its utility.

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