Accession Number:

ADA248166

Title:

Design of a Warm X-Ray Radiation Environment for Nuclear Weapons Effects Testing in the Nova-Upgrade Facility

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

116.0

Abstract:

This engineering design project examined the creation of a radiation environment for warm x-ray effects testing in the Nova Upgrade laser facility. With the use of the MORSE Monte Carlo Code and the DABL69 Broad-group cross section library, the ignition of an inertial confinement fusion pellet using D-T fuel in a test cassette was modeled in the Nova Upgrades target chamber. Various x-ray scattering materials were used in the test cassette to include enriched lithium hydride, polyethylene, liquid hydrogen, liquid helium, and liquid methane. The lithium hydride produced the best warm x-ray doses and least neutron dose. The predicted x-ray dose in silicon was 6.30 or - 0.09 kGy per MJ 630 kradMJ of warm x-ray yield with a peak dose rate of 2.3 x lO to the 12th power Gys per MJ 2.3 x lO to the 14th power rads per MJ. For a nominal 20 MJ D-T ICF pellet with a 1 warm x-ray yield, the dose is 1.38 kGy 138 krad and the peak dose rate is 4.6 x lO to the 11th power Gys 4.6 x lO to the 13th power rads. When this result is compared with the existing warm x-ray NWET simulators MBS and MBSPI, three orders of magnitude gain in dose and four orders of magnitude gain in dose rate are realized. Less than 1 of the total dose was due to neutrons.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fusion Devices (Thermonuclear)
  • Nuclear Weapons
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE