Cross sections for 36Cl from Ti at EP = 35-150 MeV: applications to in-situ exposure dating

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dc.contributor.authorFink, Den_AU
dc.contributor.authorVogt, Sen_AU
dc.contributor.authorHotchkis, MACen_AU
dc.date.accessioned2021-12-10T00:28:50Zen_AU
dc.date.available2021-12-10T00:28:50Zen_AU
dc.date.issued2000-10en_AU
dc.date.statistics2021-11-02en_AU
dc.description.abstractWe have measured the low-energy yield of 36Cl from Ti for proton energies from 35 to 150 MeV. Thin Ti foil irradiations were performed at the Harvard University Cyclotron Laboratory and 36Cl concentrations were determined using the ANTARES AMS facility at ANSTO. Cross-sections ranged smoothly with energy from 0.32±0.05 mb at 35 MeV to 5.3±0.4 mb at 150 MeV. Results for E<110 MeV are new, while the upper region from 110 to 150 MeV agrees well with overlapping data from other studies. The in-situ production rate for 36Cl from Ti at the earth’s surface and high latitude based on this excitation function and calculations of Masarik and Reedy (normalised to the mean measured yield of 36Cl from Ca) is estimated at ∼(13±3) atoms 36Cl (g Ti yr)−1. We thus conclude that in Ti-rich, Ca-poor rocks or in typical basalts, 36Cl yield from Ti can amount to ∼5–10% of total. This is similar to the contribution from slow muon capture on 40Ca and in some cases, from thermal neutron capture on native Cl. © 2000 Elsevier Science B.V.en_AU
dc.identifier.citationFink, D., Vogt, S., & Hotchkis, M. (2000). Cross-sections for 36Cl from Ti at Ep=35–150 MeV: applications to in-situ exposure dating. Paper presented at the 8th International Conference on Accelerator Mass Spectrometry (AMS-8), 6-10 September 1999, Vienna, Austria. In Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 172(1–4), 861-866. doi:10.1016/S0168-583X(00)00200-7en_AU
dc.identifier.conferenceenddate10 September 1999en_AU
dc.identifier.conferencename8th International Conference on Accelerator Mass Spectrometry (AMS-8)en_AU
dc.identifier.conferenceplaceVienna, Austriaen_AU
dc.identifier.conferencestartdate6 September 1999en_AU
dc.identifier.issn0168-583Xen_AU
dc.identifier.issue1-4en_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atomsen_AU
dc.identifier.pagination861-866en_AU
dc.identifier.urihttps://doi.org/10.1016/S0168-583X(00)00200-7en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12424en_AU
dc.identifier.volume172en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectANSTOen_AU
dc.subjectProtonsen_AU
dc.subjectIrradiationen_AU
dc.subjectIn-situ processingen_AU
dc.subjectExcitationen_AU
dc.subjectThermal neutronsen_AU
dc.subjectTitaniumen_AU
dc.subjectCalciumen_AU
dc.titleCross sections for 36Cl from Ti at EP = 35-150 MeV: applications to in-situ exposure datingen_AU
dc.typeConference paperen_AU
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