Experimental determination of anomalous scattering lengths of samarium for thermal neutrons

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6310144

Engel, D W; Koetzle, T F

Anomalous scattering lengths of natural Sm for thermal neutrons with wavelengths between 0.827 and 1.300 A have been determined using a single crysrtal of a Sm-complex of known structure. 140 selected reflections were measured at each wavelength and b/sub 0/ + b' and b'' refined in each case. The values obtained are in good agreement with theoretical values obtained from a Breit-Wigner calculation using tabulated resonance parameters for /sup 149/Sm. A value of b/sub 0/ = 4.3 +- 0.2 fm is deduced from the diffraction experiment.

• Research Organization: Associated Universities, Inc., Washington, DC (USA); Durban-Westville Univ. (South Africa); Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6310144
• Report Number(s): BNL-29949; CONF-810840-3; ON: DE81030032; TRN: 81-016304
• Resource Relation: Conference: Symposium on neutron scattering, Argonne, IL, USA, 12 Aug 1981
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRON REACTIONS
SCATTERING LENGTHS
SAMARIUM
EXPERIMENTAL DATA
MONOCRYSTALS
NEUTRON DIFFRACTION
THERMAL NEUTRONS
BARYON REACTIONS
BARYONS
COHERENT SCATTERING
CRYSTALS
DATA
DIFFRACTION
DIMENSIONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRON REACTIONS
HADRONS
INFORMATION
LENGTH
METALS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
RARE EARTHS
SCATTERING
651725* - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)