Measurements of Cl-36 with a gas-filled magnet at the Uppsala tandem laboratory
2007 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 259, no 1, 199-203 p.Article in journal (Refereed) Published
The performance of a gas-filled magnet combined with a gas ionization detector for measurements of Cl-36 was systematically studied at the Uppsala tandem laboratory. Our tests were conducted at a terminal voltage of 4,6 MV using gas-foil stripping and a 37 MeV Cl-36(+7) ion beam. An optimal suppression of the interfering isobar S-36 in the stand-alone gas-filled magnet (2 mbar N-2 gas pressure) was found to be >= 300, and an additional >= 300 times reduction was achieved by the Eresidual signal of the two-anode gas ionization detector. The overall suppression in the order of >= 10(5) permits analysis of samples with a sulfur content of <= 5 ppm and Cl-36/Cl ratios of >= 10(-15). We have successfully measured samples with Cl-36/Cl ratios in the range of 10(-12)-10(-15) demonstrating the use of a mediumsized tandem accelerator system (similar to 1 MeV/amu) for Cl-36 AMS.
Place, publisher, year, edition, pages
2007. Vol. 259, no 1, 199-203 p.
Chlorine-36, Gas-filled magnet, Isobar separation, Accelerator mass spectrometry (AMS), Gas ionization detector
IdentifiersURN: urn:nbn:se:uu:diva-24806DOI: 10.1016/j.nimb.2007.01.188ISI: 000247535600038OAI: oai:DiVA.org:uu-24806DiVA: diva2:52580