Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Detection of 32Si and 36Cl with the ETH/SIN EN-Tandem
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Cited by (36)
Isobar separation of <sup>32</sup>Si from <sup>32</sup>S in AMS using a passive absorber
2022, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :However, the high 32S current requires a reduction of the total current to a counting rate of maximal few 1000 cts/s. Considering that the 32S currents can be as high as a few 100 pA to a few nA this procedure is only applicable to samples with high 32Si/Si ratios. This method was used by [7] and [8] for the half-life measurement and led to a detection limit of 32Si/32S of about 10–7 [9]. The high intensity of the 32S isobaric interference makes an additional separation step in front of the detector necessary to achieve lower detection limits.
<sup>36</sup>Cl measurements with a gas-filled magnet at 6 MV
2019, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :The general layout and measurement procedure of 36Cl at ETH Zurich is described in Christl et al. [19]. It basically follows the early developments by Synal et al. [1] who showed already in the late 1980s that 36Cl measurements are possible at 6 MV tandem accelerators. We use a Cs-gun ion source for the production of negative ions, where Cs vapor is ionized in a hot frit and then accelerated to the samples with the full sample potential (40 keV) [20].
Isobar suppression for <sup>36</sup>Cl accelerator mass spectrometry at the University of Tsukuba
2019, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsDevelopments in accelerator mass spectrometry
2013, International Journal of Mass SpectrometryCitation Excerpt :Elaborated ion detection techniques as they had been developed during the high time of nuclear physics research are applied. They are based on the specific energy loss characteristics of different elements and at ion beam energies of 1–2 MeV/amu sufficient isobar suppression can be reached up to medium heavy elements (40 amu) [8–11]. Also gas-filled magnetic spectrometers have been utilized to enhance nuclear isobar suppression.
<sup>26</sup>Al and <sup>36</sup>Cl AMS system at the University of Tsukuba: A progress report
2007, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsMeasurements of <sup>36</sup>Cl with a gas-filled magnet at the Uppsala tandem laboratory
2007, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :Therefore, an additional 36S suppression in the order of 104–105 has to be accomplished by AMS to make measurement of 36Cl feasible. For accelerators with terminal voltages ⩾6 MV, two different approaches have successfully been applied in 36Cl AMS, either by using a stand-alone gas ionization detector [1,2] or a combination of a gas-filled magnet [3–9, GFM] and a gas ionization detector [7,8]. However, for ion energies available at small and medium-sized tandem accelerators (≲5 MV), the isobaric separation of heavy nuclei (M ⩾ 36) by a gas ionization chamber is limited by energy straggling and detector resolution [10].