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Fundamental effects and non-linear Si detector response

Whitlow, Harry J LU and Zhang, YW (2002) In Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms 190(1-4). p.375-378
Abstract
Non-linearity in the energy response of a Si p-i-n charged particle detector has been studied for incident particles with Z(1) between 3 and 26, and energies between 0.1 and 0.7 MeV per nucleon. Although the data closely followed a straight line relations, fitting of the data to a third order polynomial revealed that the response exhibited a persistent curvature that acted to reduce the energy interval spanned by a channel as the energy increased. The curvature increased as Z(1) increased from 4 to 8 and then systematically decreased. The curvature is larger and has the opposite energy dependence to the stopping in a dead entrance window and the energy deposited in non-ionising processes within the active layer. The plasma recombination... (More)
Non-linearity in the energy response of a Si p-i-n charged particle detector has been studied for incident particles with Z(1) between 3 and 26, and energies between 0.1 and 0.7 MeV per nucleon. Although the data closely followed a straight line relations, fitting of the data to a third order polynomial revealed that the response exhibited a persistent curvature that acted to reduce the energy interval spanned by a channel as the energy increased. The curvature increased as Z(1) increased from 4 to 8 and then systematically decreased. The curvature is larger and has the opposite energy dependence to the stopping in a dead entrance window and the energy deposited in non-ionising processes within the active layer. The plasma recombination dependence on the average stopping along the plasma column may account for the reduction in curvature as Z(1) increases from 9 to 25 but cannot explain the net effect. The low-energy increase in energy channel span, which has also been reported by others, might be associated with electron excitation in resonant and direct classical quasi-elastic collisions for low-energy ions, or less likely, electronic non-linearity's associated with Z(1) and energy dependent time structure in the current pulse from the detector. Simple interpolation of the window-loss corrected polynomial coefficients is the best approach if the calibration for Z(1) cannot be established directly. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
time of flight, electronic stopping, Si charged-particle detector, energy calibration, ERDA, p-i-n diode
in
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
volume
190
issue
1-4
pages
375 - 378
publisher
Elsevier
external identifiers
  • wos:000176108800073
  • scopus:0036570262
ISSN
0168-583X
DOI
10.1016/S0168-583X(01)01302-7
language
English
LU publication?
yes
id
86411405-cf04-4099-8ff2-2b5146ba16e5 (old id 335444)
date added to LUP
2007-11-19 13:41:52
date last changed
2017-01-01 07:12:57
@article{86411405-cf04-4099-8ff2-2b5146ba16e5,
  abstract     = {Non-linearity in the energy response of a Si p-i-n charged particle detector has been studied for incident particles with Z(1) between 3 and 26, and energies between 0.1 and 0.7 MeV per nucleon. Although the data closely followed a straight line relations, fitting of the data to a third order polynomial revealed that the response exhibited a persistent curvature that acted to reduce the energy interval spanned by a channel as the energy increased. The curvature increased as Z(1) increased from 4 to 8 and then systematically decreased. The curvature is larger and has the opposite energy dependence to the stopping in a dead entrance window and the energy deposited in non-ionising processes within the active layer. The plasma recombination dependence on the average stopping along the plasma column may account for the reduction in curvature as Z(1) increases from 9 to 25 but cannot explain the net effect. The low-energy increase in energy channel span, which has also been reported by others, might be associated with electron excitation in resonant and direct classical quasi-elastic collisions for low-energy ions, or less likely, electronic non-linearity's associated with Z(1) and energy dependent time structure in the current pulse from the detector. Simple interpolation of the window-loss corrected polynomial coefficients is the best approach if the calibration for Z(1) cannot be established directly.},
  author       = {Whitlow, Harry J and Zhang, YW},
  issn         = {0168-583X},
  keyword      = {time of flight,electronic stopping,Si charged-particle detector,energy calibration,ERDA,p-i-n diode},
  language     = {eng},
  number       = {1-4},
  pages        = {375--378},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms},
  title        = {Fundamental effects and non-linear Si detector response},
  url          = {http://dx.doi.org/10.1016/S0168-583X(01)01302-7},
  volume       = {190},
  year         = {2002},
}