SOME PILE OSCILLATOR CROSS-SECTION MEASUREMENTS MADE IN THE DIMPLE THERMAL PIT

Technical Report · Thu Aug 01 04:00:00 EDT 1957

OSTI ID:4336645

Cummins, J D

The thermal neutron absorption cross-sections of La, Cs, Pr, Rh, H, Sm/ sup 149/ and Nd/sup 143/ were measured by comparison with Harwell B. The ratio of the thermal neutron absorption cross-sections of Ag to Au was measured. A subcritical experiment for determining the weighting factor W, the fate of a fission neutron relative to a thermal neutron is described. Measurements of the thermal neutron absorption cross-sections of solutions of U/sup 235/, U/sup 233/, two Pu solutions of different isotopic content and for a piece of natural uranium (or both global and local chamber arrangements are described. The measurement of the ratio of the weighting factor W/sub 1/, at a local chamber to the weighting factor W at a global chamber are described. An attempt to measure the weighting factor W by oscillating a source at various pile powers is described. Measurements of apparent absorption cross sections of solid samples of Al, C, Bi, Mo, Nb, Zr and Mg, of various physical shapes are also described. (auth)

• Research Organization: United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England
• NSA Number: NSA-12-006135
• OSTI ID: 4336645
• Report Number(s): AERE-R/R-2333
• Country of Publication: United Kingdom
• Language: English

Related Subjects

ABSORPTION
ALUMINUM
CESIUM
CROSS SECTIONS
ENERGY RANGE
EV RANGE
FISSION
HYDROGEN
ISOTOPES
LANTHANUM
MAGNESIUM
MEASURED VALUES
MOLYBDENUM
NEODYMIUM 143
NEUTRONS
NIOBIUM
PHYSICS
PRASEODYMIUM
REACTOR OSCILLATORS
REACTORS
RHODIUM
SAMARIUM 149
SILVER
SOLIDS
SOLUTIONS
THERMAL NEUTRONS
URANIUM
URANIUM 233
URANIUM 235
ZIRCONIUM