Measurements of pulsed radiation-induced fiber fluorescence and darkening

Conference · Fri Dec 31 00:00:00 EST 1993

OSTI ID:10160321

Lockwood, G J; Bishop, L B; Selph, M M

Spectral temperature measurements were made of the DIAMOND FORTUNE event at the Nevada Test site. A large core fiber was used to gather light from the fireball produced in a large diameter cavity. To correct these spectral data for radiation effects on the fiber, a Fiber Monitor consisting of another fiber optic cable identical to that used to gather fireball light (but made blind to it) was used to measure changes in the fiber optic spectral transmission during the event. The data on the Fiber Monitor show a narrow induced-light pulse, followed by a long ({approximately}1.5 ms) decay fluorescence signal. Following these induced signals a reduction in the preshot transmitted signals, caused by fiber darkening, was measured. DIAMOND FORTUNE event data will be presented and compared with data obtained fro the Sandia National Laboratories (SNL) Hermes III gamma simulator and the SNL SPR III pulsed neutron facility. The radiation-induced fiber darkening thus determined will be presented.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: Department of Defense, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 10160321
• Report Number(s): SAND-93-3942C; CONF-940723-1; ON: DE94013793; BR: GB0103012; TRN: 94:012988
• Resource Relation: Conference: Annual meeting of the Society of Photo-Optical Instrumentation Engineers,San Diego, CA (United States),24-29 Jul 1994; Other Information: PBD: [1993]
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
47 OTHER INSTRUMENTATION
36 MATERIALS SCIENCE
NUCLEAR EXPLOSIONS
NUCLEAR EXPLOSION DETECTION
OPTICAL FIBERS
PHYSICAL RADIATION EFFECTS
OPTICAL PYROMETERS
PERFORMANCE TESTING
TEMPERATURE MEASUREMENT
NEVADA TEST SITE
FIBER OPTICS
FLUORESCENCE
SHIELDING
450300
440500
440600
360206
THERMAL INSTRUMENTATION
OPTICAL INSTRUMENTATION
RADIATION EFFECTS