| dbo:abstract
|
- A gas electron multiplier (GEM) is a type of gaseous ionization detector used in nuclear and particle physics and radiation detection. All gaseous ionization detectors are able to collect the electrons released by ionizing radiation, guiding them to a region with a large electric field, and thereby initiating an electron avalanche. The avalanche is able to produce enough electrons to create a current or charge large enough to be detected by electronics. In most ionization detectors, the large field comes from a thin wire with a positive high-voltage potential; this same thin wire collects the electrons from the avalanche and guides them towards the readout electronics. GEMs create the large electric field in small holes in a thin polymer sheet; the avalanche occurs inside of these holes. The resulting electrons are ejected from the sheet, and a separate system must be used to collect the electrons and guide them towards the readout. GEMs are one of the class of micropattern gaseous detectors; this class includes micromegas and other technologies. (en)
- ガス電子増幅器（ガスでんしぞうふくき、Gas Electron Multiplier、GEM、ジェム)とは、50μm程度の厚さのポリイミドまたは液晶ポリマーのフィルムの両面を銅で被覆し、直径70μm程度の穴を無数に開けたものであり、銅薄膜を電極として用い、ガス中で2つの電極間に300V程度の電圧差を掛け、穴の中にできる強い電場を作り出し、その電場によって電子雪崩増幅を起こし、電離電子数を増やし、信号として捉えるようにするものであり、多段で用いることにより1万倍以上の増幅率が実現できる。 (ja)
|
| dbo:wikiPageID
| |
| dbo:wikiPageLength
|
- 4566 (xsd:nonNegativeInteger)
|
| dbo:wikiPageRevisionID
| |
| dbo:wikiPageWikiLink
| |
| dbp:wikiPageUsesTemplate
| |
| dcterms:subject
| |
| gold:hypernym
| |
| rdf:type
| |
| rdfs:comment
|
- ガス電子増幅器（ガスでんしぞうふくき、Gas Electron Multiplier、GEM、ジェム)とは、50μm程度の厚さのポリイミドまたは液晶ポリマーのフィルムの両面を銅で被覆し、直径70μm程度の穴を無数に開けたものであり、銅薄膜を電極として用い、ガス中で2つの電極間に300V程度の電圧差を掛け、穴の中にできる強い電場を作り出し、その電場によって電子雪崩増幅を起こし、電離電子数を増やし、信号として捉えるようにするものであり、多段で用いることにより1万倍以上の増幅率が実現できる。 (ja)
- A gas electron multiplier (GEM) is a type of gaseous ionization detector used in nuclear and particle physics and radiation detection. All gaseous ionization detectors are able to collect the electrons released by ionizing radiation, guiding them to a region with a large electric field, and thereby initiating an electron avalanche. The avalanche is able to produce enough electrons to create a current or charge large enough to be detected by electronics. In most ionization detectors, the large field comes from a thin wire with a positive high-voltage potential; this same thin wire collects the electrons from the avalanche and guides them towards the readout electronics. GEMs create the large electric field in small holes in a thin polymer sheet; the avalanche occurs inside of these holes. T (en)
|
| rdfs:label
|
- Gas electron multiplier (en)
- ガス電子増幅器 (ja)
|
| owl:sameAs
| |
| prov:wasDerivedFrom
| |
| foaf:isPrimaryTopicOf
| |
| is dbo:wikiPageDisambiguates
of | |
| is dbo:wikiPageRedirects
of | |
| is dbo:wikiPageWikiLink
of | |
| is foaf:primaryTopic
of | |
