The measurement of gamma ray-induced heating in a mixed neutron and gamma ray environment

The problem of measuring the gamma heating in a mixed DT neutron and gamma ray environment was explored. A new detector technique was developed to make this measurement. Gamma heating measurements were made in a low-Z assembly irradiated with 14-MeV neutrons and (n,n$\sp\prime$) gammas produced by a Texas Nuclear Model 9400 neutron generator. Heating measurements were made in the mid-line of the lattice using a proportional counter operating in the Continuously-varied Bias-voltage Acquisition (CBA) mode. The neutron-induced signal was separated from the gamma-induced signal by exploiting the signal rise-time differences inherent to radiations of different linear energy transfer coefficient (LET), which are observable in a proportional counter. The operating limits of this measurement technique were explored by varying the counter position in the low-Z lattice, hence changing the irradiation spectrum observed.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Nuclear Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Chiu, Henry Kui Chuen

Contributors dc:contributor

• Micklich, Bradley J.

• Engineering, Nuclear

Statement dc:rights

• Copyright 1992 Chiu, Henry Kui Chuen

Language dc:language

eng

Identifier

AAI9215791
(UMI)AAI9215791

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20127