THERMAL NEUTRON ABSORPTION CROSS SECTIONS BY THE PULSED SOURCE METHOD

Journal Article · Wed Feb 01 04:00:00 EST 1961 · Nuclear Sci. and Eng.

OSTI ID:4082949

Meadows, J W; Whalen, J F

S>The thermal neutron absorption cross sections of 21 raturally occurring elements and B/sup 10/ were determined by companing the time deperdence of the neutron flux in water with the time dependence of the neutron flux in a water solution of the sample with the same geometric buckling. After making some small corrections anising largely from the change in the number of hydrogen atoms per cm/sup 3/ in the solution, the decay constant of the ratio curve gave the macroscopic absorption cross section averaged over the neutron flux spectrum. For a 1/ nu cross section, the 2200 m/sec cross section could be directly computed. For nonl/ mu cross sections, the effective 2200 m/sec cross section was obtained. (auth)

• Research Organization: Argonne National Lab., Ill.
• NSA Number: NSA-15-012053
• OSTI ID: 4082949
• Journal Information: Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 9
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
BORON 10
CROSS SECTIONS
DECAY
ELEMENTS
ERRORS
NEUTRON FLUX
NEUTRON SOURCES
PHYSICS
PULSES
SOLUTIONS
THERMAL NEUTRONS
WATER