Skip to main content
SpringerLink
Log in

Beta spectrum studies with cryogenic micro-calorimeters

  • Calorimeters
  • Published:
Journal of Low Temperature Physics Aims and scope Submit manuscript

Abstract

Low energy beta spectra are studied with sources encapsulated in a superconducting Sn absorber. An NTD germanium thermistor measures the temperature transient (≈5 msec) caused by individual beta decays, and the total energy not given to the neutrino is determined with a resolution of ≈0.5 keV (FWHM) and a threshold of ≈5 keV. The response function is determined from the mono-energetic electron capture and internal conversion source109 Cd, both separately and simultaneously with the beta spectrum. The endpoint of the unique first-forbidden decay107 Pd →107 Ag+e −+\(\bar v\) e is found to be37.5±0.1 keV. High statistics results are compared to the unique first-forbidden shape and the atomic exchange correction. The latter is seen for the first time. Preliminary results of a search for heavy neutrino admixtures are0.15±0.33%.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Ch. Weinheimer,et al, Phys. Lett.B300, 210 (1993)

    Google Scholar 

  2. See for instance: Behrens, H. & Bühring, W.,Electron Radial Wave Functions and Nuclear Beta-decay (Clarendon, Oxford, 1982)

    Google Scholar 

  3. F.P. Calaprice and B.R. Holstein, Nucl. Phys.A273, 301 (1976)

    Google Scholar 

  4. See for instance: W. Bambynek,et al, Rev. Mod. Phys49, 77 (1977)

    Google Scholar 

  5. See for instance: J. Law and Akira Suzuki, Phys. Rev.C25, 514 (1982)

    Google Scholar 

  6. See for instance: M.R. Harston and N.C. Pyper, Phys. Rev.A45, 6282 (1992)

    Google Scholar 

  7. D. Deptuck, M.M. Lowry, and I.C. Girit,Proc. Fifth Internl. Workshop on Low Temperature Detectors, Berkeley, California, USA (1993), J. Low Temp. Phys., in press.

Download references

Author information

Authors and Affiliations

  1. Physics Department, Princeton University, 08544, Princeton, NJ, USA

    M. M. Lowry, D. Deptuck & I. C. Girit

Authors
  1. M. M. Lowry
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. Deptuck
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. I. C. Girit
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lowry, M.M., Deptuck, D. & Girit, I.C. Beta spectrum studies with cryogenic micro-calorimeters. J Low Temp Phys 93, 239–244 (1993). https://doi.org/10.1007/BF00693426

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00693426

Keywords

Search

Navigation