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The implementation of a DSSSD in the upgraded boron analysis at LIBAF for applications in geochemistry

Kristiansson, Per LU ; Borysiuk, Maciek LU ; Halenius, U.; Mosenfelder, J. L.; Ros, Linus LU ; Skogby, H.; Abdel, N.; Elfman, Mikael LU ; Nilsson, E. J. C. and Pallon, Jan LU (2014) In Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms 332. p.207-211
Abstract
Interest in high spatial resolution boron analyses from a geochemical perspective is related to the recognition of boron as an important tracer of chemical recycling in the Earth, due to the high solubility of boron in aqueous fluids and silicate melts. Although boron is not a nominal component in common silicates they may still contain significant B-concentrations and hence constitute important boron reservoirs in the deeper parts of the Earth. Boron analyses have been performed at the Lund Ion Beam Analytical Facility for almost 20 years. For the analysis the nuclear reaction p+B-11 is used with beam energy just below 700 keV where the reaction has a broad resonance. In this paper we describe an upgrade of the system with a double sided... (More)
Interest in high spatial resolution boron analyses from a geochemical perspective is related to the recognition of boron as an important tracer of chemical recycling in the Earth, due to the high solubility of boron in aqueous fluids and silicate melts. Although boron is not a nominal component in common silicates they may still contain significant B-concentrations and hence constitute important boron reservoirs in the deeper parts of the Earth. Boron analyses have been performed at the Lund Ion Beam Analytical Facility for almost 20 years. For the analysis the nuclear reaction p+B-11 is used with beam energy just below 700 keV where the reaction has a broad resonance. In this paper we describe an upgrade of the system with a double sided silicon strip detector, which allows for much higher count rates compared to the old annular surface detector based system. A gain close to 20 in the data rate allows for high resolution mapping of boron distributions in crystals. This is illustrated by a number of examples. In addition, the detection limits for boron in geological samples are improved, now around 5 ppmw. In this work we address issues with data quality, especially charge normalization, lifetime correction and subtraction of different background components. (C) 2014 The Authors. Published by Elsevier B.V. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
3 alpha)-Reaction, (p, Boron analysis, NRA, DSSSD
in
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
volume
332
pages
207 - 211
publisher
Elsevier
external identifiers
  • wos:000339131200046
  • scopus:84902540083
ISSN
0168-583X
DOI
10.1016/j.nimb.2014.02.062
language
English
LU publication?
yes
id
cfca1201-aa03-43f2-9f58-0dadfc2e18c3 (old id 4591882)
date added to LUP
2014-09-08 08:40:33
date last changed
2017-01-22 03:52:20
@article{cfca1201-aa03-43f2-9f58-0dadfc2e18c3,
  abstract     = {Interest in high spatial resolution boron analyses from a geochemical perspective is related to the recognition of boron as an important tracer of chemical recycling in the Earth, due to the high solubility of boron in aqueous fluids and silicate melts. Although boron is not a nominal component in common silicates they may still contain significant B-concentrations and hence constitute important boron reservoirs in the deeper parts of the Earth. Boron analyses have been performed at the Lund Ion Beam Analytical Facility for almost 20 years. For the analysis the nuclear reaction p+B-11 is used with beam energy just below 700 keV where the reaction has a broad resonance. In this paper we describe an upgrade of the system with a double sided silicon strip detector, which allows for much higher count rates compared to the old annular surface detector based system. A gain close to 20 in the data rate allows for high resolution mapping of boron distributions in crystals. This is illustrated by a number of examples. In addition, the detection limits for boron in geological samples are improved, now around 5 ppmw. In this work we address issues with data quality, especially charge normalization, lifetime correction and subtraction of different background components. (C) 2014 The Authors. Published by Elsevier B.V.},
  author       = {Kristiansson, Per and Borysiuk, Maciek and Halenius, U. and Mosenfelder, J. L. and Ros, Linus and Skogby, H. and Abdel, N. and Elfman, Mikael and Nilsson, E. J. C. and Pallon, Jan},
  issn         = {0168-583X},
  keyword      = {3 alpha)-Reaction,(p,Boron analysis,NRA,DSSSD},
  language     = {eng},
  pages        = {207--211},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms},
  title        = {The implementation of a DSSSD in the upgraded boron analysis at LIBAF for applications in geochemistry},
  url          = {http://dx.doi.org/10.1016/j.nimb.2014.02.062},
  volume       = {332},
  year         = {2014},
}