Much ado about nothing: deep minima in ⁴⁵Sc and ⁵⁶Fe total neutron cross sections

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:6841382

Chrien, R. E.; Liou, H. I.; Block, R. C.; Singh, U. N.; Kobayashi, K.

The deep minima in /sup 45/Sc and /sup 56/Fe neutron total cross sections were measured at the Gaerttner Linac Laboratory by using thick, ultra-pure samples in transmission experiments. The samples are used to produce quasi-monoenergetic beams at the BNL High Flux Beam Reactor. For the /sup 45/Sc minimum near 2.05 keV we obtain sigma/sub total/ = 0.71 +- 0.03 barns, in sharp contrast to a previously reported value of approximately 0.05 barns. The /sup 56/Fe measurement was carried out with a 6 kg, 68.58-cm-long sample of 99.87% isotopically pure sample of /sup 56/Fe; a minimum cross section of 0.0085 +- 0.004 barns at 24.39 keV is inferred. This may be compared to a value of 0.420 barns for natural iron.

• Research Organization: Brookhaven National Lab., Upton, N.Y. (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 6841382
• Report Number(s): BNL--22742; CONF-770321--10
• Country of Publication: United States
• Language: English

Related Subjects

651525* -- Nuclear Properties & Reactions
A=39-58
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
CROSS SECTIONS
HADRON REACTIONS
IRON 56 TARGET
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
SCANDIUM 45 TARGET
TARGETS
TOTAL CROSS SECTIONS