A compact tunable x-ray source based on parametric x-ray generation by moderate energy linacs
Loading...
Authors
Maruyama, X.K.
DiNova, K.
Snyder, D.
Piestrup, M.A.
Li, Qiang
Fiorito, R.B.
Rule, D.W.
Subjects
Advisors
Date of Issue
1993
Date
Publisher
Language
Abstract
Parametric x-radiation can be described as
the diffraction of virtual photons associated with
the electric field of a relativistic charged particle
passing through a crystal. In analogy with Bragg
reflection of x-rays, these diffracted photons
appear as real photons, with an energy which
satisfies Bragg's law for the reflecting crystal
planes. We describe the results of experiments
performed on the Naval Postgraduate School linac
which were designed to explore the basic
properties of PXR in order to assess its potential
application as a compact tunable x-ray source.
Experiments using a mosaic graphite radiator
show that this radiator produced multiple order,
narrow bandwidth reflections from 5 - 45 keV.
The measured production efficiency is found to
exceed that predicted for spectral orders n > 1.
We demonstrated the tunability of PXR by
rotating the crystal in order to change the Bragg
angle relative to the incident 90 MeV electron
beam.
Type
Article
Description
Series/Report No
Department
Organization
Identifiers
NPS Report Number
Sponsors
This work was partially supported by the Defense Nuclear Agency, the Naval Postgraduate School and USDOE SBIR Contract (No. DE-FG03-9lER81099)
Funder
Format
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.