Advertisement

JETP Letters

, Volume 84, Issue 3, pp 105–109 | Cite as

Experimental verification of the 1/v law for the absorption cross section of ultracold neutrons in natural gadolinium

  • A. I. Frank
  • P. Geltenbort
  • G. V. Kulin
  • A. N. Strepetov
Article

Abstract

The results of a new experiment on the transmission of ultracold neutrons through a natural gadolinium film are reported. The results indicate that the transmission of the sample is unchanged when the sample moves parallel to its surface. The neutron velocity in the sample coordinate system varies in a range of 6–35 m/s. It follows from the constancy of the sample transmission that the imaginary part of the scattering length is constant; i.e., the law 1/v is valid for the capture cross section of the free nucleus with an accuracy of about 0.5%.

PACS numbers

03.75.Be 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    I. I. Gurevich and L. V. Tarasov, Low-Energy Neutron Physics (Nauka, Moscow, 1965; North-Holland, Amsterdam, 1968).Google Scholar
  2. 2.
    A. I. Frank, V. I. Bodnarchuk, P. Geltenbort, et al., Yad. Fiz. 66, 1879 (2003) [Phys. At. Nucl. 66, 1831 (2003)].Google Scholar
  3. 3.
    M. L. Goldberger and F. Seitz, Phys. Rev. 71, 294 (1947).zbMATHCrossRefADSGoogle Scholar
  4. 4.
    I. I. Gurevich and P. É. Nemirovskiĭ, Sov. Phys. JETP 14, 838 (1962).Google Scholar
  5. 5.
    I. M. Frank, in Proceedings of the II International School on Neutron Physics (JINR, Dubna, 1974), JINR D3-7991; Usp. Fiz. Nauk 161, 109 (1991) [Sov. Phys. Usp. 34, 988 (1991)].Google Scholar
  6. 6.
    A. I. Gurevich and V. V. Lomonosov, Yad. Fiz. 60, 589 (1997) [Phys. At. Nucl. 60, 510 (1997)].Google Scholar
  7. 7.
    V. V. Lomonosov and A. I. Gurevich, Zh. Éksp. Teor. Fiz. 122, 928 (2002) [JETP 95, 800 (2002)].Google Scholar
  8. 8.
    V. V. Golikov, E. N. Kulagin, and Yu. V. Nikitenko, Kratk. Soobshch. Ob. Inst. Yad. Issled. (Dubna), No. 9-85, 26 (1985).Google Scholar
  9. 9.
    V. I. Morozov, M. I. Novopol’tsev, Yu. N. Panin, et al., Pis’ma Zh. Éksp. Teor. Fiz. 46, 301 (1987) [JETP Lett. 46, 377 (1987)].Google Scholar
  10. 10.
    H. Rauch, M. Zawisky, Ch. Stellmach, and P. Geltenbort, Phys. Rev. Lett. 83, 4955 (1999).CrossRefADSGoogle Scholar
  11. 11.
    J. Felber, R. Gähler, and R. Golub, Phys. Rev. Lett. 85, 5667 (2000); H. Rauch, M. Zawisky, Ch. Stellmach, and P. Geltenbort, Phys. Rev. Lett. 85, 5668 (2000).CrossRefADSGoogle Scholar
  12. 12.
    M. Lax, Rev. Mod. Phys. 23, 287 (1951); Phys. Rev. 85, 621 (1952).zbMATHMathSciNetCrossRefADSGoogle Scholar
  13. 13.
    A. I. Frank and V. G. Nosov, Yad. Fiz. 58, 453 (1995) [Phys. At. Nucl. 58, 402 (1995)].Google Scholar
  14. 14.
    I. V. Bondarenko, S. N. Balashov, P. Geltenbort, et al., Pis’ma Zh. Éksp. Teor. Fiz. 67, 741 (1998) [JETP Lett. 67, 781 (1998)].Google Scholar
  15. 15.
    A. Steyerl, H. Nagel, F. Schriber, et al., Phys. Lett. A 116, 347 (1986).CrossRefADSGoogle Scholar
  16. 16.
    I. V. Bondarenko, A. I. Frank, S. N. Balashov, et al., Nucl. Instrum. Methods Phys. Res. A 440, 591 (2000).CrossRefADSGoogle Scholar
  17. 17.
    A. I. Frank, S. N. Balashov, I. V. Bondarenko, et al., Phys. Lett. A 311, 6 (2003).CrossRefADSGoogle Scholar
  18. 18.
    A. I. Frank, P. Geltenbort, G. V. Kulin, and A. N. Strepetov, Pis’ma Zh. Éksp. Teor. Fiz. 78, 224 (2003) [JETP Lett. 78, 188 (2003)].Google Scholar
  19. 19.
    A. I. Frank, P. Geltenbort, G. V. Kulin, et al., Pis’ma Zh. Éksp. Teor. Fiz. 81, 541 (2005) [JETP Lett. 81, 421 (2005)].Google Scholar
  20. 20.
    A. A. Seregin, Zh. Éksp. Teor. Fiz. 73, 1634 (1977) [Sov. Phys. JETP 46, 859 (1977)].Google Scholar
  21. 21.
    K.-A. Steinhauser, A. Steyerl, H. Schechenkofer, and S. S. Malik, Phys. Rev. Lett. 44, 1306 (1980).CrossRefADSGoogle Scholar
  22. 22.
    Yu. N. Pokotilovskiĭ, A. D. Stoĭka, and I. G. Shelkova, Prib. Tekh. Éksp., No. 1, 62 (1980).Google Scholar
  23. 23.
    I. V. Bondarenko, V. I. Bodnarchuk, S. N. Balashov, et al., Yad. Fiz. 62, 775 (1999) [Phys. At. Nucl. 62, 721 (1999)].Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • A. I. Frank
    • 1
  • P. Geltenbort
    • 2
  • G. V. Kulin
    • 1
  • A. N. Strepetov
    • 3
  1. 1.Frank Neutron Physics LaboratoryJoint Institute for Nuclear ResearchDubna, Moscow regionRussia
  2. 2.Institut Laue LangevinGrenoble Cedex 9France
  3. 3.Russian Research Centre Kurchatov InstituteMoscowRussia

Personalised recommendations