THERMAL SELF-SHIELDING AND EDGE EFFECTS IN ABSORBING FOILS

Journal Article · Mon Jul 01 04:00:00 EDT 1963 · Nuclear Science and Engineering (U.S.)

OSTI ID:4690961

Crane, J L; Doerner, R C

Self-shielding and edge corrections were investigated for varying thicknesses of 1 cm dia. gold foils. Test foils were irradiated in the hohlraum or air chamber of the TRIGA Mark II reactor. The self-shielding effect was determined from the activation of a series of foils of different thicknesses, and the edge correction from the activities of successively smaller contentric rings punched from the parent foil. Edge effects were found in the 2.5-mil and thicker foils, and were statistically significant only in the outer millimeter of the foil radius. After cutting off the outer millmeter of the foils, the activity was found to follow the 1/2 - E/sub 3/(t SIGMA /sub a/) law for infinite foils. (auth)

• Research Organization: Cornell Univ., Ithaca, N.Y.
• NSA Number: NSA-17-030871
• OSTI ID: 4690961
• Journal Information: Nuclear Science and Engineering (U.S.), Journal Name: Nuclear Science and Engineering (U.S.) Vol. Vol: 16; ISSN NSENA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
FOILS
GOLD
INSTRUMENTS AND INSTRUMENTATION
IRRADIATION
QUANTITATIVE ANALYSIS
RADIOACTIVITY
REACTORS
SHIELDING
THERMAL INSULATION
THICKNESS