Transcription of Gamma-Ray Detectors
{{id}} {{{paragraph}}}
Example: bankruptcy
Gamma-Ray Detectors
3 gamma -RayDetectorsHastingsASmith,Jr., , , , ,eitherdirectly(aswithaproportionalcount erorasolid-statesemiconductordetector)or indirectly(aswithascintillationdetector) , ,wewillpresentsomegeneralinformationonty pesof gamma -raydetectorsthatareusedinnondestru ctiveassay(NDA) , , ( )Inmostdesignstheouterelectrodeisthecyli ndricalwallofthegaspressurevessel,andthe inner(positive) (especiallyofionizationchambers) . 4 l%escintillationandsolid-statedetectorsa remuchmoredesirableforobtainingthe~spect roscopicdetailneededintheenergyrangetypi calofuraniumandplutoniumradiation(approx imately100-1000keV).Gascountersaredescri bedinmoredetailinChapter13,sincetheyarem orewidelyusedforneutrondetection. - - - * ~teCtO~Thesensitivevolumeofascintillatio ndetectorisaluminescentmaterial(asolid,l iquid,orgas)thatisviewedbyadevicethatdet ectsthegamma-ray-inducedlightemissions[u suallyaphotomultipliertube(PMT)].Thescin tillationmaterialmaybeorganicorinorganic ; ,plastics, (thestandardagainstwhichotherscintillato rsarecompared).
46 Hastings A. Smith, Jr., and Marcia Lucas loss from the scintillator volume). Thus, an output signal is produced that is pro-portional to the energy deposited by the gamma ray in the scintillation medium.
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: