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Isotopic tungsten targets

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Abstract

In order to explore the isospin dependence of the quasifission process, a set of reactions with a wide range of N/Z was required. To maximize the sensitivity of the measurement to the isospin effects it was required that the Z of the projectile and target be fixed. Therefore, a set of isotopic targets spanning a relatively large N/Z range was desired. Tungsten, having five stable isotopes, provided a 6 neutron difference from 180W to 186W and can be obtained with high enrichment. Therefore, the production of enriched 180,182,184,186W targets was needed. Additionally, the targets were required to be relatively thin (<100 μg/cm2) in order to minimize the energy loss and scattering of the fission or quasifission fragments resulting from the reactions. Details of the W target preparation as well as target performance will be presented.

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Acknowledgments

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 and by the National Science Foundation under Grant Nos. PHY-1102511 and IIA-1341088. This research used resources of ANL’s ATLAS facility, which is a DOE Office of Science User Facility.

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Authors and Affiliations

  1. Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA

    John P. Greene

  2. National Superconducting Cyclotron Laboratory, Chemistry Department, Michigan State University, 640 South Shaw Lane, East Lansing, MI, 48824, USA

    Zach Kohley

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  1. John P. Greene
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  2. Zach Kohley
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Correspondence to John P. Greene.

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The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.

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Greene, J.P., Kohley, Z. Isotopic tungsten targets. J Radioanal Nucl Chem 305, 743–747 (2015). https://doi.org/10.1007/s10967-015-3977-9

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  • DOI: https://doi.org/10.1007/s10967-015-3977-9

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