Influence of Moderator Size on the Slowing Down of (D, D) Neutrons in Paraffin Wax

Journal Article · Sun Jul 01 04:00:00 EDT 1962 · Nuclear Science and Engineering

OSTI ID:4809257

Grimeland, B. ^[1]; Messelt, S. ^[1]; Sund, L. ^[1]

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1. Univ. of Oslo (Norway)

Neutrons from a D(d,n)He³ neutron source, operating with 150-kev deuterons, were slowed down in blocks of paraffin wax. The distribution of 1.44- ev neutrons was measured with indium foils in five blocks of various dimensions, all facing the target with one of their end planes. The distribution was approximately the same in all blocks with thickness equal to or larger than 22 cm, which was about four times the slowing-down length in paraffin for (D,D) neutrons slowed down to 1.44 ev. Measurements were also made in a block of dimensions 50 x 50 x 100 cm³ with the target at the center. The distribution of 1.44-ev neutrons was nearly the same as in the blocks. The slowing-down age for (D,D) neutrons to 1.44 ev in paraffin wax, measured in the direction of the incoming deuteron beam, was found to be (33.0 ± 1.3) cm³.

• Research Organization: Univ. of Oslo (Norway)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• NSA Number: NSA-16-026210
• OSTI ID: 4809257
• Journal Information: Nuclear Science and Engineering, Journal Name: Nuclear Science and Engineering Vol. 13; ISSN 0029-5639
• Publisher: Taylor & Francis
• Country of Publication: Norway
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CONFIGURATION
DEUTERIUM
DEUTERONS
DISTRIBUTION
ENERGY RANGE
FERMI AGE
FOILS
HELIUM 3
INDIUM
MEASURED VALUES
MODERATORS
NEUTRON SOURCES
NEUTRONS
NUCLEAR REACTIONS
Nuclear Criticality Safety Program (NCSP)
PARAFFIN
SLOWDOWN