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Title: Energy distribution measurement of narrow-band ultrashort x-ray beams via K-edge filters subtraction

Abstract

The characterization of novel x-ray sources includes the measurement of the photon flux and the energy distribution of the produced beam. The aim of BEATS2 experiment at the SPARC-LAB facility of the INFN National Laboratories of Frascati (Rome, Italy) is to investigate possible medical applications of an x-ray source based on Thomson relativistic back-scattering. This source is expected to produce a pulsed quasi-monochromatic x-ray beam with an instantaneous flux of 10{sup 20} ph/s in pulses 10 ps long and with an average energy of about 20 keV. A direct measurement of energy distribution of this beam is very difficult with traditional detectors because of the extremely high photon flux. In this paper, we present a method for the evaluation of the energy distribution of quasi-monochromatic x-ray beams based on beam filtration with K-edge absorbing foils in the energy range of interest (16-22 keV). The technique was tested measuring the energy distribution of an x-ray beam having a spectrum similar to the expected one (SPARC-LAB Thomson source) by using a tungsten anode x-ray tube properly filtered and powered. The energy distribution obtained has been compared with the one measured with a HPGe detector showing very good agreement.

Authors:
; ; ; ; ; ; ;  [1]
  1. Dipartimento di Fisica, Universita di Ferrara and INFN - Ferrara, via Saragat 1, I-44122 Ferrara (Italy)
Publication Date:
OSTI Identifier:
22089486
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 112; Journal Issue: 7; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BACKSCATTERING; ENERGY SPECTRA; FILTERS; FILTRATION; FOILS; HIGH-PURITY GE DETECTORS; KEV RANGE; MONOCHROMATIC RADIATION; MONOCHROMATORS; PULSES; RELATIVISTIC RANGE; X RADIATION; X-RAY DETECTION; X-RAY SOURCES; X-RAY TUBES

Citation Formats

Cardarelli, Paolo, Di Domenico, Giovanni, Marziani, Michele, Mucollari, Irena, Pupillo, Gaia, Sisini, Francesco, Taibi, Angelo, and Gambaccini, Mauro. Energy distribution measurement of narrow-band ultrashort x-ray beams via K-edge filters subtraction. United States: N. p., 2012. Web. doi:10.1063/1.4757027.
Cardarelli, Paolo, Di Domenico, Giovanni, Marziani, Michele, Mucollari, Irena, Pupillo, Gaia, Sisini, Francesco, Taibi, Angelo, & Gambaccini, Mauro. Energy distribution measurement of narrow-band ultrashort x-ray beams via K-edge filters subtraction. United States. https://doi.org/10.1063/1.4757027
Cardarelli, Paolo, Di Domenico, Giovanni, Marziani, Michele, Mucollari, Irena, Pupillo, Gaia, Sisini, Francesco, Taibi, Angelo, and Gambaccini, Mauro. 2012. "Energy distribution measurement of narrow-band ultrashort x-ray beams via K-edge filters subtraction". United States. https://doi.org/10.1063/1.4757027.
@article{osti_22089486,
title = {Energy distribution measurement of narrow-band ultrashort x-ray beams via K-edge filters subtraction},
author = {Cardarelli, Paolo and Di Domenico, Giovanni and Marziani, Michele and Mucollari, Irena and Pupillo, Gaia and Sisini, Francesco and Taibi, Angelo and Gambaccini, Mauro},
abstractNote = {The characterization of novel x-ray sources includes the measurement of the photon flux and the energy distribution of the produced beam. The aim of BEATS2 experiment at the SPARC-LAB facility of the INFN National Laboratories of Frascati (Rome, Italy) is to investigate possible medical applications of an x-ray source based on Thomson relativistic back-scattering. This source is expected to produce a pulsed quasi-monochromatic x-ray beam with an instantaneous flux of 10{sup 20} ph/s in pulses 10 ps long and with an average energy of about 20 keV. A direct measurement of energy distribution of this beam is very difficult with traditional detectors because of the extremely high photon flux. In this paper, we present a method for the evaluation of the energy distribution of quasi-monochromatic x-ray beams based on beam filtration with K-edge absorbing foils in the energy range of interest (16-22 keV). The technique was tested measuring the energy distribution of an x-ray beam having a spectrum similar to the expected one (SPARC-LAB Thomson source) by using a tungsten anode x-ray tube properly filtered and powered. The energy distribution obtained has been compared with the one measured with a HPGe detector showing very good agreement.},
doi = {10.1063/1.4757027},
url = {https://www.osti.gov/biblio/22089486}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 7,
volume = 112,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 2012},
month = {Mon Oct 01 00:00:00 EDT 2012}
}