Coarse spectral characterization of warm x-rays at the Z facility using a filtered thermoluminescent dosimeter array

V J Harper-Slaboszewicz; B A Ulmen; C T Parzyck; D J Ampleford; A L McCourt; K S Bell; C A Coverdale

doi:10.1063/1.4979626

Coarse spectral characterization of warm x-rays at the Z facility using a filtered thermoluminescent dosimeter array

Rev Sci Instrum. 2017 Apr;88(4):043501. doi: 10.1063/1.4979626.

Authors

V J Harper-Slaboszewicz¹, B A Ulmen¹, C T Parzyck¹, D J Ampleford¹, A L McCourt¹, K S Bell¹, C A Coverdale¹

Affiliation

¹ Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185-1159, USA.

PMID: 28456222
DOI: 10.1063/1.4979626

Abstract

A new collimated filtered thermoluminescent dosimeter (TLD) array has been developed at the Z facility to characterize warm x-rays (hν > 10 keV) produced by Z pinch radiation sources. This array includes a Kapton debris shield assembly to protect the TLDs from the source debris, a collimator array to limit the field of view of the TLDs to the source region, a filter wheel containing filters of aluminum, copper and tungsten up to 3 mm thick to independently filter each TLD, and a hermetically sealed cassette containing the TLDs as well as tungsten shielding on the sides and back of the array to minimize scattered radiation reaching the TLDs. Experimental results from a krypton gas puff and silver wire array shot are analyzed using two different functional forms of the energy spectrum to demonstrate the ability of this diagnostic to consistently extend the upper end of the x-ray spectrum characterization from ∼50 keV to >1 MeV.