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Nonradiative decay of the low-lying nuclear isomer 229mTh(3.5 eV) in a metal

  • Fields, Particles, and Nuclei
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A new nonradiative decay channel for the anomalously low-lying isomeric level 3/2+ (3.5±1.0 eV) of the 229Th nucleus in a metal via the conduction electrons is examined. The lifetime of the isomer in a metal is calculated. An explanation is given for the experimental results of S. B. Utter et al., Phys. Rev. Lett. 82, 505 (1999), where the optical radiation spectrum of the indicated isomer was investigated.

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  1. C. W. Reich and R. G. Helmer, Phys. Rev. Lett. 64, 271 (1990).

    Article  ADS  Google Scholar 

  2. R. G. Helmer and C. W. Reich, Phys. Rev. C 49, 1845 (1994).

    Article  ADS  Google Scholar 

  3. V. F. Strizhov and E. V. Tkalya, Zh. Éksp. Teor. Fiz. 99, 697 (1991) [Sov. Phys. JETP 72, 387 (1991)].

    Google Scholar 

  4. E. V. Tkalya, Yad. Fiz. 55, 2881 (1992) [Sov. J. Nucl. Phys. 55, 1661 (1992)].

    Google Scholar 

  5. E. V. Tkalya, V. O. Varlamov, V. V. Lomonosov, and S. A. Nikulin, Phys. Scr. 53, 296 (1996).

    ADS  Google Scholar 

  6. A. M. Dykhne, N. V. Eremin, and E. V. Tkalya, JETP Lett. 64, 345 (1996).

    Article  ADS  Google Scholar 

  7. A. F. Burenkov, F. F. Komarov, M. A. Kumakhov, and M. M. Temkin, Spatial Distributions of the Energy Released in an Atomic Collision Cascade in Solids [in Russian] (Énergoatomizdat, Moscow, 1985).

    Google Scholar 

  8. A. B. Pippard, Rep. Prog. Phys. 23, 176 (1960).

    Article  ADS  Google Scholar 

  9. N. W. Ashcroft and N. D. Mermin, Solid State Physics (Holt, Rinehart and Winston, New York, 1976).

    Google Scholar 

  10. I. M. Band, M. A. Listengarten, M. B. Trzhaskovskaya, and V. I. Fomichev, Preprints LIYaF-289 and LIYaF-298-300, Leningrad Institute of Nuclear Physics, Leningrad (1976–1977).

  11. D. P. Grechukhin and A. A. Soldatov, Preprint IAÉ-2976 [in Russian], Kurchatov Institute of Atomic Energy, Moscow (1998).

  12. A. M. Dykhne and E. V. Tkalya, JETP Lett. 67, 251 (1998).

    ADS  Google Scholar 

  13. S. B. Utter, P. Beiersdorfer, A. Barnes et al., Phys. Rev. Lett. 82, 505 (1999).

    Article  ADS  Google Scholar 

  14. G. M. Irwin and K. H. Kim, Phys. Rev. Lett. 79, 990 (1997).

    Article  ADS  Google Scholar 

  15. D. S. Richardson, D. M. Benton, D. E. Evans et al., Phys. Rev. Lett. 80, 3206 (1998).

    ADS  Google Scholar 

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Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 6, 367–370 (25 September 1999)

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Tkalya, E.V. Nonradiative decay of the low-lying nuclear isomer 229mTh(3.5 eV) in a metal. Jetp Lett. 70, 371–374 (1999).

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