The angular dependence of an Si energy deposition spectrometer response at several radiation sources.
An MDU-Liulin spectrometer based on an Si-diode was mainly used during the last few years with the goal to use them for measurements onboard aircraft. To investigate its ability to obtain such measurements, the detector was tested in some radiation reference fields, like 60Co and other photon beams, neutrons of an AmBe and 252Cf sources and in high-energy radiation fields at CERN. Due to the high geometrical asymmetry of the Si-diode semiconductor, an angular dependence of the response would be expected. This work presents analyses and discusses the results of angular dependence studies obtained at the different radiation sources mentioned. It was found that these angular dependences vary with the type and energy of radiation. The influence of these variations on the use as a dosimeter onboard aircraft is also studied and discussed.
Spurný
Frantisek
F
Department of Radiation Dosimetry, Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Prague, Czech Republic. spurny@ujf.cas.cz
Trompier
François
F
Bottollier-Depois
Jean-François
JF
D000401:Aircraft / Q000295:instrumentation; D000576:Americium; D001608:Beryllium; D002142:Californium; D003037:Cobalt Radioisotopes; D009502:Neutrons; D009686:Nuclear Physics; D010315:Particle Accelerators; D011834:Radiation Monitoring / Q000295:instrumentation*; D011868:Radioisotopes; D012666:Semiconductors; D012825:Silicon; D013057:Spectrum Analysis / Q000295:instrumentation*
D003037:Cobalt Radioisotopes; D011868:Radioisotopes; C034018:americium oxide; D002142:Californium; D001608:Beryllium; D000576:Americium; D012825:Silicon