Hyperfine Interactions

, Volume 77, Issue 1, pp 71–81 | Cite as

Precision measurements of recoil-free fraction and interference with hundred Curie sources

  • R. A. Wagoner
  • B. R. Bullard
  • J. G. Mullen
  • G. Schupp
Article

Abstract

We discuss our experiences with exceptionally intense Mössbauer sources (of order 100 Ci) and their use in making precision determinations of line shape parameters. We review our measurements of interference and recoilless fraction using conventional transmission geometry. Fitting simultaneous sets of data with known constraints greatly improves the efficiency of line-shape determination. Measurements of interference have been made using a two-absorber technique first introduced by Mössbauer and coworkers. Our results indicate that the method can be useful for determining interference, but that incorrect line shape parameters are obtained if powder samples are used which do not comply well with the assumption of thickness uniformity in the absorber.

Keywords

Thin Film Shape Parameter Powder Sample Line Shape Precision Measurement 

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Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • R. A. Wagoner
    • 1
  • B. R. Bullard
    • 1
  • J. G. Mullen
    • 1
  • G. Schupp
    • 2
  1. 1.Physics DepartmentPurdue UniversityWest LafayetteUSA
  2. 2.Physics DepartmentUniversity of MissouriColumbiaUSA

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