Critical-current changes in neutron-irradiated Nb/sub 3/Sn as a function of irradiation temperature and initial metallurgy

Journal Article · Sat Jul 01 04:00:00 EDT 1978 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.325377· OSTI ID:6849594

Brown, B S; Blewitt, T H; Scott, T L; Wozniak, D G

Fast-neutron irradiations have been performed on Nb/sub 3/Sn wires to determine the roles of irradiation temperature and the unirradiated value of the critical-current density (J/sub c/0) on the changes in J/sub c/. Four experiments were performed: low- (6 K) and high- (350 K) temperature irradiation of high- (2 x 10/sup 1/0 A/cm/sup 2/ at 5 T and 4.2 K) and moderate- (0.8 x 10/sup 1/0 A/cm/sup 2/) J/sub c/0 material. The large increases in J/sub c/ for the moderate-J/sub c/0 material were independent of irradiation temperature; the increases were smaller for the high-J/sub c/0 material, and a significant difference was found for the two irradiation temperatures. The difference is attributed to the greater pinning capability of defect cascades over defect clusters in the high-J/sub c/0 material. The smaller amount of J/sub c/ recovery after a 300 K anneal, when compared with NbTi, can also be understood in terms of the defects responsible for the flux pinning.

• Research Organization: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 6849594
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 49:7; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BARYONS
BEAMS
CRITICAL CURRENT
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
HADRONS
IRRADIATION
MAGNETIC FLUX
METALLURGY
NEUTRON BEAMS
NEUTRONS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
NUCLEON BEAMS
NUCLEONS
PARTICLE BEAMS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TIN ALLOYS
TYPE-II SUPERCONDUCTORS