Order number
page 24
940406-171827
set 5 with ! OFFICIAE‘GSEONLY
DISPLACEMENT GAGES; GREENHOUSE; INSTRUMENTATION; PRESSURE
GAGES ; STIMASCOPES ; STRUCTURES ; SOUND TRANSMISSION
Item
150.
110.
41
REPORT NUMBER
/
XRD--176
PRIMARY TITLE (M)
Vycor glass gamma ray dosimeters. Appendix No. 20.
‘
Director of Ship Material report. Operation Crossroads
70. PERSONAL AUTHOR (M)
Eicher, M.; Friedman, H.
371. PUB. DATE (YYMMDD)
470203
Unclassified
34. CLASSIF. LEVEL TEXT
(Also issued as NP-3076). Experiments were
950. ABSTRACT
performed on fuzed quartz, silica glasses, soda-lime
glass, and nonex glass in order to determine which was
best suited as a color-changing dosimeter. None of the
glossy materials showed critical temperatures for
bleaching as was found in crystal quartz. Vycor glass
(96% SiO{sub 2})
801.
KEYWORD (S)
DOSEMETERS/performance ; CROSSROADS; DOSEMETERS;
PERFORMANCE;
Item
150.
110.
offered an acceptable compromise
between sensitivity and stability against heat. The
dosages measured by the vycor glass ranged from 100 r to
20,000 r. The principle of darkening of vycor glass by
{gamma} rays proved to be applicable for a rugged,
simple dosimeter suitable for use by military and
civilian personnel.
CROSSROADS/effects experiments ;
GLASS
42
REPORT NUMBER
PRIMARY TITLE (M)
DOFL-TR--795
Effects of pulsed nuclear radiation on
nonoperating tubes and transistors
70. PERSONAL AUTHOR (M)
Chandler, H.G.
710. CORPORATE SOURCE
Diamond Ordnance Fuze Labs., Washington, DC (USA)
371. PUB. DATE (YYMMDD)
591120
34. CLASSIF. LEVEL TEXT
Unclassified
950. ABSTRACT
During Operation Hardtack, electron tubes of both
ceramic and glass construction and transistors were
exposed to nuclear radiation while they were not
functioning. These components were subjected to neutron
bombardment as great as
4
x
10{sup 14}
Pu{sup 239}
No deleterious effects on the electron tubes were
observed under these conditions.
801.
KEYWORD(S$)
90033498
However,
measured
nvt.
transistor parameters suffered large percentage changes
from radiation greater than 3 x 10{sup 13} Pu{sup 239}
nvt. These effects were much greater in audio than in
r-f types. 4 references.
ELECTRON TUBES/radiation effects
TRANSISTORS/radiation effects
;
;HARDTACK;NEUTRONS
OFFICIAL USE ONLY