THE SPECTRUM MATRIX METHOD IN $gamma$ RAY TRANSMISSION PROBLEMS FOR MULTIPLE LAYERS

Journal Article · Sat Feb 01 04:00:00 EST 1964 · Nippon Genshiryoku Gakkaishi (Japan)

OSTI ID:4049427

Tsuruo, A

An approximate calculation method in gamma transmission problems is shown for multiple layers. In this method, the differential energy flux of incident gamma rays is expressed by a vector, and the shielding property of each slab is represented by a matrix. The matrix is constructed by a relatively simple procedure, using the data of penetration in infinite media calculatedby the moments method and the data of the effect of finite slabs calculated by the Monte Carlo method. The compound shielding property of multiple layers is also represented by the matrix, which is obtained by the multiplication of the matrix corresponding to each slab. The differential energy flux of transmitted gamma ray is given by multiplying the incident vector by the matrix. The results of the method were compared with those of the Monte Carlo calculation for Pb-H/sub 2/ O and H/sub 2/O- Pb stratified slabs, and also with those of experiments for Pb, Fe, and Al stratified slabs. The comparison showed that this method is useful for all combinations of materials for high incident energy, and when low energy gamma rays enter the heavy layer followed by a light or heavy layer. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• NSA Number: NSA-18-019263
• OSTI ID: 4049427
• Journal Information: Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 6; ISSN NGEGA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ABSORPTION
ALUMINUM
ENERGY
GAMMA RADIATION
IRON
LAYERS
LEAD
MATHEMATICS
MATRICES
MOMENTS METHOD
MONTE CARLO METHOD
PHYSICS
PLATES
SHIELDING
SPECTRA
TRANSPORT THEORY
VECTORS
WATER