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Title: High-Energy γ -Ray Source from Electron-Positron Pair Annihilation

Abstract

Problems associated with the use of the process e ++e -→2$$\gamma$$ as a source for high-energy $$\gamma$$ rays are investigated. The polarization of the $$\gamma$$'s is shown to be negligible at high energies. The spread of $$\gamma$$ spectra at a fixed angle due to radiative corrections is investigated. Terms like ($$\frac{a}{π}$$) 1n 2 ($$\frac{4E^2}{m^2}$$) are associated with infrared divergence and disappear with a reasonable energy resolution. The result is very similar to Schwinger's corrections without vacuum polarization. Our result was found to be also usable in the colliding-beam experiment without any modification, under certain conditions.

Authors:
 [1]
  1. Stanford Univ., CA (United States). Stanford Linear Accelerator Center
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1444159
Report Number(s):
SLAC-PUB-0045
Journal ID: ISSN 0031-899X; PHRVAO
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review
Additional Journal Information:
Journal Volume: 137; Journal Issue: 3B; Journal ID: ISSN 0031-899X
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Tsai, Yung-Su. High-Energy γ -Ray Source from Electron-Positron Pair Annihilation. United States: N. p., 1965. Web. doi:10.1103/PhysRev.137.B730.
Tsai, Yung-Su. High-Energy γ -Ray Source from Electron-Positron Pair Annihilation. United States. doi:10.1103/PhysRev.137.B730.
Tsai, Yung-Su. Mon . "High-Energy γ -Ray Source from Electron-Positron Pair Annihilation". United States. doi:10.1103/PhysRev.137.B730. https://www.osti.gov/servlets/purl/1444159.
@article{osti_1444159,
title = {High-Energy γ -Ray Source from Electron-Positron Pair Annihilation},
author = {Tsai, Yung-Su},
abstractNote = {Problems associated with the use of the process e++e-→2$\gamma$ as a source for high-energy $\gamma$ rays are investigated. The polarization of the $\gamma$'s is shown to be negligible at high energies. The spread of $\gamma$ spectra at a fixed angle due to radiative corrections is investigated. Terms like ($\frac{a}{π}$) 1n2 ($\frac{4E^2}{m^2}$) are associated with infrared divergence and disappear with a reasonable energy resolution. The result is very similar to Schwinger's corrections without vacuum polarization. Our result was found to be also usable in the colliding-beam experiment without any modification, under certain conditions.},
doi = {10.1103/PhysRev.137.B730},
journal = {Physical Review},
number = 3B,
volume = 137,
place = {United States},
year = {1965},
month = {2}
}

Journal Article:
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