Output signal from Nb-based tunnel junctions by irradiation of 6 KeV X-rays

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6089318

Ishibashi, K; Mori, K; Takena, K; Nagae, T; Matusmoto, Y ^[1]; Takada, S; Nakagawa, H; Akoh, H ^[2]

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1. Dept. of Nuclear Engineering, Kyushu Univ., Hakozaki, Fukuoka 812 (JP)
2. Electrotechnical Lab., Umezono, Tsukuba 305 (JP)

This paper reports on niobium-based superconducting tunnel junctions expected to be applicable to high resolution X-ray measurements. Large-size tunnel junctions with a Nb/Al/AlO{sub x}/Nb structure have been fabricated in order to study their performance in X-ray detection. The junction detected 5.9 keV X-rays with an energy resolution of 1 keV. Output signal is analyzed by the use of coupled Boltzmann equations. The method based on these equations clarifies the basic behavior of the quasiparticles and phonons, and the average energy for producing a single electron amounts to 3.2{Delta}.

• OSTI ID: 6089318
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
665411 -- Basic Superconductivity Studies-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BOLTZMANN EQUATION
CHALCOGENIDES
DETECTION
DIFFERENTIAL EQUATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY RANGE
EQUATIONS
FABRICATION
JUNCTIONS
KEV RANGE
KEV RANGE 01-10
MEASURING INSTRUMENTS
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTIAL DIFFERENTIAL EQUATIONS
PERFORMANCE
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIATION DETECTION
RADIATION DETECTORS
REFRACTORY METAL COMPOUNDS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
X-RAY DETECTION