Critical currents in Nb/sub 3/Sn fast-neutron irradiated at 6 K

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.88615· OSTI ID:7355387

Colucci, S L; Weinstock, H; Brown, B S

The short-section critical current density j/subc/ of neutron-irradiated Nb/sub 3/Sn composite wires has been measured at 4.2/sup 0/K in transverse magnetic fields up to 10 T. Irradiation was conducted at approx. 6/sup 0/K, and j/subc/ measurements were made after annealing to 77 K. A fluence of 4.8 x 10/sup 17/ n/cm/sup 2/ (E>0.1 MeV) increased j/subc/(H) (for H>1.5 T) above high unirradiated values (about 1 x 10/sup 6/ A/cm/sup 2/ at 4 T). The enhancement in j/subc/ increased with field, to 45% at 10 T. Samples irradiated to 1.1 x 10/sup 18/ n/cm/sup 2/ showed enhancements in j/subc/ a few percent less than samples given the lower dose. After annealing to 295 and 415/sup 0/K, roughly half of the j/subc/ enhancement remained for H>4 T. Changes in the defect structure caused by irradiation and subsequent annealing, and which are responsible for increased flux pinning, are discussed. (AIP)

• Research Organization: Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616
• OSTI ID: 7355387
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 28:11; ISSN APPLA
• 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
ANNEALING
BARYONS
COMPOSITE MATERIALS
CRITICAL CURRENT
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
ELEMENTARY PARTICLES
EQUIPMENT
FAST NEUTRONS
FERMIONS
HADRONS
HEAT TREATMENTS
IRRADIATION
MAGNETIC FLUX
MAGNETS
NEUTRONS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
NUCLEONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TIN ALLOYS
TRANSITION TEMPERATURE
TYPE-II SUPERCONDUCTORS
WIRES