Development of a high intensity 48Ca ion beam for the heavy element program

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A high intensity {sup 48}Ca ion beam has been developed at the 88 Inch Cyclotron for the synthesis of {sup 283}112 using the reaction {sup 238}U({sup 48}Ca, 3n). An ion beam intensity of {approx} 700 pnA was delivered on target, resulting in a total dose of 2 x 10{sup 18} ions over a six day period. Since {sup 48}Ca is a very expensive and rare isotope minimal consumption is essential. Therefore a new oven [1] and special tantalum liner [2] have been developed for the AECR-U ion source during the last year to improve the metal ion beam efficiency. Both ... continued below

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Wutte, Daniela; Leitner, Mattheus & Lyneis, Claude February 2, 2002.

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Description

A high intensity {sup 48}Ca ion beam has been developed at the 88 Inch Cyclotron for the synthesis of {sup 283}112 using the reaction {sup 238}U({sup 48}Ca, 3n). An ion beam intensity of {approx} 700 pnA was delivered on target, resulting in a total dose of 2 x 10{sup 18} ions over a six day period. Since {sup 48}Ca is a very expensive and rare isotope minimal consumption is essential. Therefore a new oven [1] and special tantalum liner [2] have been developed for the AECR-U ion source during the last year to improve the metal ion beam efficiency. Both the LBL ECR and the AECR-U ion sources are built with radial access. Six radial slots between the sextupole magnet bars provide additional pumping and easy access to the plasma chamber for ovens and feedthroughs. Two types of radial ovens have been used at LBNL in the past, operating at temperatures up to 2100 C.

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INIS; OSTI as DE00803871

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  • Other Information: PBD: 2 Feb 2002

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  • Report No.: LBNL--51554
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/803871 | External Link
  • Office of Scientific & Technical Information Report Number: 803871
  • Archival Resource Key: ark:/67531/metadc742758

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  • February 2, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 12:39 p.m.

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Wutte, Daniela; Leitner, Mattheus & Lyneis, Claude. Development of a high intensity 48Ca ion beam for the heavy element program, report, February 2, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc742758/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.