Comparison of detector systems for the separation of 36Cl and 36S with a 3-MV tandem

Tobias Orlowski; Oliver Forstner; Robin Golser; Walter Kutschera; Silke Merchel; Martin Martschini; Alfred Priller; Peter Steier; Christof Vockenhuber; Anton Wallner

doi:10.1016/j.nimb.2009.10.046

Comparison of detector systems for the separation of ³⁶Cl and ³⁶S with a 3-MV tandem

Tobias Orlowski^*, Oliver Forstner, Robin Golser, Walter Kutschera, Silke Merchel, Martin Martschini, Alfred Priller, Peter Steier, Christof Vockenhuber, Anton Wallner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The possibility of detecting ³⁶Cl for geological exposure dating has been explored for several years at VERA (the Vienna Environmental Research Accelerator). First results on real samples were obtained with an ionization chamber (developed at the ETH/PSI, Zürich, Switzerland) with two anodes. To improve the suppression of ³⁶S, we equipped the ionization chamber with an exit window and added a Time-of-Flight (TOF) system with a double-sided silicon strip detector (50 × 50 mm²) as stop detector. We optimized the TOF setup by using silicon nitride foils to reduce scattering tails in the energy spectra. At 3 MV terminal voltage, corresponding to a particle energy of 24 MeV of ³⁶Cl⁷⁺, we achieved a ³⁶S⁷⁺-suppression of 21,500 (50% ³⁶Cl-detector-efficiency).

Original language	English
Pages (from-to)	847-850
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	268
Issue number	7-8
DOIs	https://doi.org/10.1016/j.nimb.2009.10.046
Publication status	Published - Apr 2010
Externally published	Yes

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10.1016/j.nimb.2009.10.046

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Orlowski, T., Forstner, O., Golser, R., Kutschera, W., Merchel, S., Martschini, M., Priller, A., Steier, P., Vockenhuber, C., & Wallner, A. (2010). Comparison of detector systems for the separation of ³⁶Cl and ³⁶S with a 3-MV tandem. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 268(7-8), 847-850. https://doi.org/10.1016/j.nimb.2009.10.046

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title = "Comparison of detector systems for the separation of 36Cl and 36S with a 3-MV tandem",

abstract = "The possibility of detecting 36Cl for geological exposure dating has been explored for several years at VERA (the Vienna Environmental Research Accelerator). First results on real samples were obtained with an ionization chamber (developed at the ETH/PSI, Z{\"u}rich, Switzerland) with two anodes. To improve the suppression of 36S, we equipped the ionization chamber with an exit window and added a Time-of-Flight (TOF) system with a double-sided silicon strip detector (50 × 50 mm2) as stop detector. We optimized the TOF setup by using silicon nitride foils to reduce scattering tails in the energy spectra. At 3 MV terminal voltage, corresponding to a particle energy of 24 MeV of 36Cl7+, we achieved a 36S7+-suppression of 21,500 (50% 36Cl-detector-efficiency).",

keywords = "AMS, Cl, Ionization chamber, Isobar separation, TOF",

author = "Tobias Orlowski and Oliver Forstner and Robin Golser and Walter Kutschera and Silke Merchel and Martin Martschini and Alfred Priller and Peter Steier and Christof Vockenhuber and Anton Wallner",

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Orlowski, T, Forstner, O, Golser, R, Kutschera, W, Merchel, S, Martschini, M, Priller, A, Steier, P, Vockenhuber, C & Wallner, A 2010, 'Comparison of detector systems for the separation of ³⁶Cl and ³⁶S with a 3-MV tandem', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 268, no. 7-8, pp. 847-850. https://doi.org/10.1016/j.nimb.2009.10.046

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AU - Orlowski, Tobias

AU - Forstner, Oliver

AU - Golser, Robin

AU - Kutschera, Walter

AU - Merchel, Silke

AU - Martschini, Martin

AU - Priller, Alfred

AU - Steier, Peter

AU - Vockenhuber, Christof

AU - Wallner, Anton

PY - 2010/4

Y1 - 2010/4

N2 - The possibility of detecting 36Cl for geological exposure dating has been explored for several years at VERA (the Vienna Environmental Research Accelerator). First results on real samples were obtained with an ionization chamber (developed at the ETH/PSI, Zürich, Switzerland) with two anodes. To improve the suppression of 36S, we equipped the ionization chamber with an exit window and added a Time-of-Flight (TOF) system with a double-sided silicon strip detector (50 × 50 mm2) as stop detector. We optimized the TOF setup by using silicon nitride foils to reduce scattering tails in the energy spectra. At 3 MV terminal voltage, corresponding to a particle energy of 24 MeV of 36Cl7+, we achieved a 36S7+-suppression of 21,500 (50% 36Cl-detector-efficiency).

AB - The possibility of detecting 36Cl for geological exposure dating has been explored for several years at VERA (the Vienna Environmental Research Accelerator). First results on real samples were obtained with an ionization chamber (developed at the ETH/PSI, Zürich, Switzerland) with two anodes. To improve the suppression of 36S, we equipped the ionization chamber with an exit window and added a Time-of-Flight (TOF) system with a double-sided silicon strip detector (50 × 50 mm2) as stop detector. We optimized the TOF setup by using silicon nitride foils to reduce scattering tails in the energy spectra. At 3 MV terminal voltage, corresponding to a particle energy of 24 MeV of 36Cl7+, we achieved a 36S7+-suppression of 21,500 (50% 36Cl-detector-efficiency).

KW - AMS

KW - Cl

KW - Ionization chamber

KW - Isobar separation

KW - TOF

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DO - 10.1016/j.nimb.2009.10.046

M3 - Article

SN - 0168-583X

VL - 268

SP - 847

EP - 850

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 7-8

ER -

Comparison of detector systems for the separation of ³⁶Cl and ³⁶S with a 3-MV tandem

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