Physics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nimpa.418..337k&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 418, Issue 2-3, p. 337-347.
Physics
4
Scientific paper
The next generation of X-ray astrophysics missions may well extend the energy range beyond the current limit of about 10keV studied by the existing X-ray Astrophysics space missions such as ASCA or future missions such as AXAF and XMM to be launched in the next few years. To address with a high degree of sensitivity the astrophysical problems associated with X-ray emission in the X-ray band from 0.2 to 100keV a significant extension of the capabilities of focusing X-ray optics and imaging broad band hard X-ray detectors will be required. Future missions such as INTEGRAL, BASIS and EXIST will make use of CdZnTe or CdTe detectors for imaging spectroscopy down to about 5keV with a spectral resolution between 3% and 7% at 100keV. This is about a factor of 10 away from what is theoretically possible and mainly caused by the poor crystal quality. In this paper experimental results on the study of the X-ray response of CdZnTe detectors are presented. The detector response to photons with energies between 1 and 5keV has been investigated using synchrotron radiation and a preliminary model to describe the detector response developed. The limitations on the energy resolution, due to incomplete charge collection and spatial non-uniformities, are presented based on the detailed mapping of the energy response of a detector exposed to highly monochromatised synchrotron radiation. At higher energies results have been obtained using a 241Am radioactive source and an electron cyclotron resonance source so as to establish the detector performance and overall response to medium- and higher-energy X-ray photons up to 60keV. Based on these results the performance of the detectors are compared with Si(Li) and HPGe solid-state detectors.
Bavdaz Marcos
Castelletto B.
Gagliardi Mari-Anne
Juvonen M.
Kraft Sebastian
No associations
LandOfFree
The X-ray response of CdZnTe detectors to be used as future spectroscopic detectors for X-ray astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The X-ray response of CdZnTe detectors to be used as future spectroscopic detectors for X-ray astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray response of CdZnTe detectors to be used as future spectroscopic detectors for X-ray astronomy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-763519