Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron

L. B. Levy, R. G. Waggener, W. D. McDavid, W. H. Payne

Research output: Chapter in Book/Report/Conference proceedingChapter

38 Citations (Scopus)

Abstract

The bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron were measured using a NaI(T1) spectrometer system. The spectra show a low energy cut off at 0.6 and 0.4 MeV, respectively, and the maximum photon energies were 26.8 and 19 MeV, respectively. Cross sections, thin and thick target photon spectra and total electron energy losses (collision and radiative) were computed using a digital computer for tungsten (Z=74) and platinum (Z=78) targets. The measured spectra were compared to the calculated spectra for thin and thick targets using electron kinetic energies of 26.75 and 19 MeV. The photon spectra from the 2 therapy units are different; however, depth dose data (10X10 cm, 100 cm TSD) are approximately the same. In addition, narrow beam attenuation coefficients in lead for the 2 machines were measured. The effective energy derived from the first HVL was 8.1 MeV for the linear accelerator and 7.8 MeV for the betatron.

Original languageEnglish (US)
Title of host publicationMED.PHYS.
Pages62-67
Number of pages6
Volume1
Edition2
StatePublished - 1974

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Particle Accelerators
Photons
Electrons
Tungsten
Platinum
Therapeutics

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Levy, L. B., Waggener, R. G., McDavid, W. D., & Payne, W. H. (1974). Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron. In MED.PHYS. (2 ed., Vol. 1, pp. 62-67)

Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron. / Levy, L. B.; Waggener, R. G.; McDavid, W. D.; Payne, W. H.

MED.PHYS.. Vol. 1 2. ed. 1974. p. 62-67.

Research output: Chapter in Book/Report/Conference proceedingChapter

Levy, LB, Waggener, RG, McDavid, WD & Payne, WH 1974, Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron. in MED.PHYS.. 2 edn, vol. 1, pp. 62-67.
Levy LB, Waggener RG, McDavid WD, Payne WH. Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron. In MED.PHYS.. 2 ed. Vol. 1. 1974. p. 62-67
Levy, L. B. ; Waggener, R. G. ; McDavid, W. D. ; Payne, W. H. / Experimental and calculated bremsstrahlung spectra from a 25 MeV linear accelerator and a 19 MeV betatron. MED.PHYS.. Vol. 1 2. ed. 1974. pp. 62-67
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