Low Energy Germanium Detector
Found 6 free book(s)Chapter 1 Infrared Detector Characterization - SPIE
spie.orgavailable for germanium at an earlier date, the first high-performance extrin-sic detectors were based on Ge:Hg with activation energy for the Hg acceptor of 0.089 eV. Extrinsic photoconductive response from copper, zinc, and gold impurity levels in germanium gave rise to devices using the 8- to 14-mm long
XPS Spectra - casaxps.com
www.casaxps.comanalyser (HSA) before the intensity for a defined energy is recorded by a detector. Since core level electrons in solid-state atoms are quantized, the resulting energy spectra exhibit resonance peaks ... over layer covering of the elemental germanium and therefore the low energy photoelectrons from the Ge 2p line are attenuated resulting in a ...
GAMMA SPECTROSCOPY - OVERVIEW - Nuclear …
www.nrc.govJun 01, 2011 · - High Purity Germanium (HPGe) ... detector. A pulse is a short-term change in the voltage. 22 2. The greater the energy deposited in the detector, the larger the pulse. Source 320 keV 1173 keV How many pulses would the detector produce? ... The gain might be increased if only low energies are of interest. • The amplifier also changes the ...
Avalanche Photodiodes: A User's Guide
www.chem.uci.eduFor low-light detection in the 200 to 1150 nm range, the designer has three basic detector choices - the silicon PIN detector, the silicon avalanche photodiode (APD) and the photomultiplier tube (PMT). APDs are widely used in instrumentation and aerospace applications, offering a combination of high speed and high sensitivity unmatched by PIN
OPTICAL FIBER COMMUNICATION - SLAC National …
www.slac.stanford.edu- Germanium or Phosphorus to increase the index of refraction. - Boron or Flourine to decrease the index of refraction. - Silica fibers mainly used due to their low intrinsic absorption at wavelengths of operation.-Any other remaining impurities cause attenuation and scattering. Plastic Fibers - Plastic core and plastic cladding.
FTIR Spectroscopy: Attenuated Total Reflectance (ATR)
www.perkinelmer.com(ZnSe) and Germanium are by far the most common used for HATR sampling. Zinc Selenide is a rela-tively low cost ATR crystal material and is ideal for analyzing liquids and non-abrasive pastes and gels but it is not particularly robust with a working pH range of 5-9. ZnSe scratches quite easily and so care must be taken when cleaning the crystal ...