Properties of HTS for successful U/n processing

被引：15

作者：

Weinstein, R

Ren, Y

Sawh, R

Gandini, A

Hennig, W

Murakami, M

Mochida, T

Chikumoto, N

Sakai, N

Krabbes, G

Bieger, W

Milliken, D

Dou, SX

Tönies, S

Eisterer, M

Weber, HW

机构：

[1] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[2] Ambio SRL, Int Superconduct Technol Ctr, Minato Ku, Tokyo 105, Japan

[3] Zent Inst Festkorperphys & Werkstofforsch, D-01171 Dresden, Germany

[4] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[5] Univ Vienna, Inst Atom, A-1020 Vienna, Austria

来源：

PHYSICA C | 2000年 / 341卷

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/S0921-4534(00)00960-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Insertion of uranium into HTS precursor powders prior to texturing, and irradiation with thermal neutrons after texturing is called U/n processing. Damage caused by uranium fission fragments has been extensively studied for pinning center behavior in Y123, and Ag-BiSCCO tape. In both HTS systems results for J(c), anisotropy, etc, are excellent. We consider the chemical and physical conditions under which U/n processing is successful, including spacing, S, and size of deposits of U compounds, and neutron absorption by the HTS. If delta =length of the quasi-columnar fission fragment defects, we find S<2<delta> similar to5.4 mum is needed for the best U/n results and, thus, if deposits of U compounds exist sub-micron size is desirable. Application of these conditions is considered to Y123, Ag-BiSCCO tape, Nd123, Sm123 and Gd123. Studies in progress or. Nd123 and Sm123 are reported.

引用

页码：1415 / 1418

页数：4

共 12 条

[1] ZUM ENERGIEVERLUST SCHNELLER ELEKTRONEN IN DUNNEN SCHICHTEN [J].

BLUNCK, O ;

LEISEGANG, S .

ZEITSCHRIFT FUR PHYSIK, 1950, 128 (04) :500-505

[2] VORTEX CONFINEMENT BY COLUMNAR DEFECTS IN YBA2CU3O7 CRYSTALS - ENHANCED PINNING AT HIGH FIELDS AND TEMPERATURES [J].

CIVALE, L ;

MARWICK, AD ;

WORTHINGTON, TK ;

KIRK, MA ;

THOMPSON, JR ;

KRUSINELBAUM, L ;

SUN, Y ;

CLEM, JR ;

HOLTZBERG, F .

PHYSICAL REVIEW LETTERS, 1991, 67 (05) :648-651

[3]

FLEISCHER R, 1991, Patent No. 4996192

[4]

GANDINI A, 2000, 1206 M2SHTSCVI

[5] ENHANCEMENT OF PERSISTENT CURRENTS IN BI2SR2CACU2O8 TAPES WITH SPLAYED COLUMNAR DEFECTS INDUCED WITH 0.8 GEV PROTONS [J].

KRUSINELBAUM, L ;

THOMPSON, JR ;

WHEELER, R ;

MARWICK, AD ;

LI, C ;

PATEL, S ;

SHAW, DT .

APPLIED PHYSICS LETTERS, 1994, 64 (24) :3331-3333

[6] Uranium chemistry and pinning centers in high temperature superconductor [J].

Sawh, RP ;

Ren, Y ;

Weinstein, R ;

Hennig, W ;

Nemoto, T .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1998, 305 (3-4) :159-166

[7]

SAWH RP, 2000, 1228 M2SHTSCVI

[8] Enhancement of transport critical current densities in Bi2Sr2Ca2Cu3Ox tapes by fission tracks [J].

Schulz, GW ;

Klein, C ;

Weber, HW ;

Moss, S ;

Zeng, R ;

Dou, SX ;

Sawh, R ;

Ren, Y ;

Weinstein, R .

APPLIED PHYSICS LETTERS, 1998, 73 (26) :3935-3937

[9] The role of uranium, with and without irradiation, in the achievement of Jc≈300000 A cm-2 at 77 K in large grain melt-textured Y123 [J].

Weinstein, R ;

Sawh, R ;

Ren, YR ;

Parks, D .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1998, 53 (1-2) :38-44

[10]

WEINSTEIN R, 1964, INTERACTION RAD MATT

← 1 2 →