Patent JPS4422981B1 successfully refreshed from Google Patents.
EP0449559A2
Expired / Lapsed
EP
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Radiation detection device and radiation
Assignee: Nippon Steel Corp
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Filing: 1991-03-26
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Granted: —
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Expires: 2011-03-26
Abstract
Abstract In a radiation detection device using superconducting tunnel junctions, the increase in electric capacitance and the decrease in electric resistance due to the increase in junction area for improvement of the detection efficiency are largely repressed by the invention. The junctions are connected in series. The number of the series-connected junctions is settled in the range of larger than 0.05 (SC o /C′) 0.5 and smaller than 20 (SC o /C′) 0.5 or 10SC o /C′, whichever is larger, where S is the total area of the junctions, cm², C o is the electric capacitance per unit area of the junctions, F/cm², and C′ is the electric capacitance connected to the device in parallel so as to transfer and amplify the signals from the device ,F.
Inventors
- 👤 Masahiko Kurakado
- 👤 Atsuki Matsumura
- 👤 Tooru Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 10:01
CPC Classifications
H; H10; H10N; H10N69/00; H10N60/00; H10N60/80; H10N60/84; H10N60/10; H10N60/12; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/842; Y10S505/843; Y10S505/848; Y10S505/849; Y10S505/866
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A radiation detection device using superconducting tunnel junctions characterized in that said superconducting tunnel junctions are connected in series, and the number of said junctions is not less than four, larger than 0.05(SC o /(20 x 10⁻¹² F)) 0.5 , and smaller than 20(SC o /(5 x 10⁻¹² F)) 0.5 or 10SC o /(5x10⁻¹² F), whichever is larger, where S is the total area of said junctions, cm², and C o is the electric capacitance per unit area of said junctions, F/cm²..
Claim 2
Dependent Claim
37 words
A radiation detection device according to claim 1, characterized in that the number of said junctions is larger than 0.05(SC o /(20 x 10⁻¹² F)) 0.5 and smaller than 20(SC o /(5 x 10⁻¹² F)) 0.5 .
Claim 3
Dependent Claim
114 words
A radiation detection device using superconducting tunnel junctions characterized in that said device comprises at least two members connected in parallel, each of said members is one of a superconducting tunnel junction and series arrays of superconducting tunnel junctions, and the number of junctions of said member, in at least one of said members, is not less than four, larger than 0.05(SC o /(20 x 10⁻¹² F)) 0.5 , and smaller than 20(SC o /(5 x 10⁻¹² F)) 0.5 or 10 SC o /(5 x 10⁻¹² F), whichever is larger, where S is the total area of said junctions, cm², and C o is the electric capacitance per unit area of said junctions, F/cm².
Claim 4
Dependent Claim
39 words
A radiation detection device according to claim 3, characterized in that the number of junctions in said member is larger than 0.05(SC o /(20 x 10⁻¹² F)) 0.5 and smaller than 20(SC o /(5 x 10⁻¹² F)) 0.5 .
Claim 5
Dependent Claim
66 words
A radiation detection device according to claim 3, which characterized in that the device comprises at least two series arrays each of which has the superconducting tunnel junctions in a number being not less than four, larger than 0.05(SC o /(20 x 10⁻¹² F)) 0.5 , and smaller than 20(SC o /(5 x 10⁻¹² F)) 0.5 or 10SC o /(5 x 10⁻¹² F), whichever is larger.
Claim 6
Dependent Claim
108 words
A radiation detector comprising a radiation detection device using superconducting tunnel junctions and a signal amplifier, characterized in that said radiation detection device comprises a plurality of superconducting tunnel junctions connected in series, and the number of said junctions is not less than four, larger than 0.05(SC o /C′) 0.5 , and smaller than 20(SC o /C′) 0.5 or 10 SC o /C′, whichever is larger, where S is the total area of said junctions, cm², C o is the electric capacitance per unit area of said junctions, F/cm² and C′ is the input electric capacitance on said signal amplifier side as viewed relative to said device ,F.
Claim 7
Dependent Claim
30 words
A radiation detector according to claim 6, characterized in that the number of said junctions is larger than 0.05(SC o /C′) 0.5 and smaller than 20(SC o /C′) 0.5 .
Claim 8
Dependent Claim
133 words
A radiation detector comprising a radiation detection device using superconducting tunnel junctions and a signal amplifier, characterized in that said radiation detection device comprises at least two members connected in parallel, each of said members is one of a superconducting tunnel junction and series arrays of superconducting tunnel junctions, and the number of junctions of said member, in at least one of said members, is not less than four, larger than 0.05(SC o /C′) 0.5 , and smaller than 20(SC o /C′) 0.5 or 10 SC o /C′, whichever is larger, where S is the total area of said junctions, cm², C o is the electric capacitance per unit area of said junctions, F/cm² and C′ is the input electric capacitance on said signal amplifier side as viewed relative to said device ,F.
Claim 9
Dependent Claim
32 words
A radiation detector according to claim 8, characterized in that the number of junctions of said members is larger than 0.05(SC o /C′) 0.5 and smaller than 20(SC o /C′) 0.5 .
Claim 10
Dependent Claim
58 words
A radiation detector according to claim 8, characterized in that said radiation detection device comprises at least two series arrays each of which has the superconducting tunnel junctions in a number being not less than four, larger than 0.05(SC o /C′) 0.5 , and smaller than 20(SC o /C′) 0.5 or 10 SC o /C′, whichever is larger.
Claim 11
Dependent Claim
66 words
A radiation detection device using superconducting tunnel junctions characterised in that the number of junctions is: not less than four; larger than 0.05(SC₀/(20 x 10⁻¹²F)) 0.5 ; and smaller than 20(SC₀/(5 x 10⁻¹²F)) 0.5 or 10SC₀/(5 x 10⁻¹²F), whichever is larger, where S is the total area of the junctions in cm², and C₀ is the electric capacitance per unit area of the junctions in F/cm².
References Cited (Backward Citations)
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