ENERGY RESOLVING X-RAY DETECTORS USING NIOBIUM ABSORBERS AND MULTIPLE QUASIPARTICLE TUNNELING BETWEEN TWO ALUMINUM TRAPS

被引：6

作者：

Mears, C. A. ^{[1
]}

Labov, Simon E. ^{[1
]}

Morris, G. W. ^{[1
]}

Cunningham, C. E. ^{[1
]}

Le Gros, M. A. ^{[1
]}

Silver, Eric H. ^{[1
]}

Barfknecht, A. T. ^{[2
]}

Madden, Norman. W. ^{[3
]}

Landis, Don A. ^{[3
]}

Goulding, Fred S. ^{[3
]}

Bland, Roger W. ^{[4
]}

Laws, Kenneth E. ^{[4
]}

Dynes, R. C. ^{[5
]}

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Expt Astrophys Lab, POB 808,L-401, Livermore, CA 94550 USA

[2] Conductus Inc, 969 West Maude Ave, Sunnyvale, CA 94086 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Elect Engn, MS 29-100, Berkeley, CA 94720 USA

[4] San Francisco State Univ, Dept Phys & Astron, San Francisco, CA 94132 USA

[5] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233444

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We are developing superconducting tunnel junction devices for use as high-resolution, high-efficiency x-ray spectrometers. We have tested a device with niobium x-ray absorbing layers coupled to two aluminum layers on either side of the tunneling barrier which serve as quasiparticle traps. These devices were fabricated photolithographically using a modified niobium/aluminum/niobium trilayer fabrication process. Our first devices have a very thin barrier with specific normal state resistance of 1.5 x 10(-6) Omega cm(2), and also exhibit very low leakage current (< 15 nA below 200 mK). The energy resolution at 6 keV was 120 eV FWHM. We estimate that each quasiparticle tunnels an average of 8 times before recombining, increasing the total charge transferred and decreasing the effects of electronic noise.

引用

页码：2092 / 2095

页数：4

共 10 条

[1]

Barfknetcht A. T., 1991, IEEE T MAG, VMAG-27, P970

[2] QUASI-PARTICLE TRAPPING AND THE QUASI-PARTICLE MULTIPLIER [J].

BOOTH, NE .

APPLIED PHYSICS LETTERS, 1987, 50 (05) :293-295

[3]

de Korte P. A. J., 1992, P SPIE, V1743

[4] QUASI-PARTICLE TRAPPING FROM A SINGLE-CRYSTAL SUPERCONDUCTOR INTO A NORMAL-METAL FILM VIA THE PROXIMITY EFFECT [J].

GOLDIE, DJ ;

BOOTH, NE ;

PATEL, C ;

SALMON, GL .

PHYSICAL REVIEW LETTERS, 1990, 64 (08) :954-957

[5] QUASIPARTICLE AND PHONON LIFETIMES IN SUPERCONDUCTORS [J].

KAPLAN, SB ;

CHI, CC ;

LANGENBERG, DN ;

CHANG, JJ ;

JAFAREY, S ;

SCALAPINO, DJ .

PHYSICAL REVIEW B, 1976, 14 (11) :4854-4873

[6] QUASIPARTICLE TRAPPING IN A SUPERCONDUCTIVE DETECTOR SYSTEM EXHIBITING HIGH-ENERGY AND POSITION RESOLUTION [J].

KRAUS, H ;

VONFEILITZSCH, F ;

JOCHUM, J ;

MOSSBAUER, RL ;

PETERREINS, T ;

PROBST, F .

PHYSICS LETTERS B, 1989, 231 (1-2) :195-202

[7] POSSIBILITY OF HIGH-RESOLUTION DETECTORS USING SUPERCONDUCTING TUNNEL-JUNCTIONS [J].

KURAKADO, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1982, 196 (01) :275-277

[8]

Labov S. E., 1992, P SPIE, V1743

[9] THE PROPERTIES OF NIOBIUM SUPERCONDUCTING TUNNELING JUNCTIONS AS X-RAY-DETECTORS [J].

RANDO, N ;

PEACOCK, A ;

VANDORDRECHT, A ;

FODEN, C ;

ENGELHARDT, R ;

TAYLOR, BG ;

GARE, P ;

LUMLEY, J ;

PEREIRA, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 313 (1-2) :173-195

[10]

ZEHNDER A, 1990, P SOC PHOTO-OPT INS, V1344, P286, DOI 10.1117/12.23256

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