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Single-neutron excitations in neutron-rich Ge83 and Se85

J. S. Thomas1,*, G. Arbanas2, D. W. Bardayan3, J. C. Blackmon3, J. A. Cizewski1, D. J. Dean3, R. P. Fitzgerald4, U. Greife5, C. J. Gross3 et al.

M. S. Johnson1,†, K. L. Jones1,‡, R. L. Kozub6, J. F. Liang3, R. J. Livesay5,§, Z. Ma7, B. H. Moazen6,‡, C. D. Nesaraja3,7, D. Shapira3, M. S. Smith3, and D. W. Visser4

  • 1Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903, USA
  • 2Nuclear Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 3Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
  • 4Department of Physics and Astronomy, University of North Carolina at Chapel Hill, North Carolina 27599, USA
  • 5Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA
  • 6Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505, USA
  • 7Physics Department, University of Tennessee, Knoxville, Tennessee 37996, USA

  • *Present address: School of Electronics and Physical Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom.
  • †Present address: Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • ‡Present address: Physics Department, University of Tennessee, Knoxville, Tennessee 37996, USA.
  • §Present address: Nuclear Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
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Phys. Rev. C 76, 044302 – Published 3 October, 2007

DOI: https://doi.org/10.1103/PhysRevC.76.044302

Abstract

The H2(Ge82,p)Ge83 and H2(Se84,p)Se85 reactions were studied with radioactive beams of Ge82 and Se84 at beam energies of Ebeam=330 and 380 MeV, respectively. Excitation energies, proton angular distributions, and asymptotic normalization coefficients have been determined for the lowest lying states of Ge83 and Se85. Spectroscopic factors have also been extracted under normal assumptions of the bound-state potential properties in the distorted waves Born approximation analysis. However, the peripheral character of the measurements leads to large uncertainties in this extraction. Shell-model calculations have been performed in the region above Ni78, comparing the single-particle properties of the even-Z,N=51 nuclei up to Zr91 and including Ge83 and Se85. Direct-semidirect neutron capture calculations to Ge83 and Se85 have also been performed using the spectroscopic input from these (d,p) reaction measurements.

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References (47)

  1. T. Otsuka, R. Fujimoto, Y. Utsuno, B. A. Brown, M. Honma, and T. Mizusaki, Phys. Rev. Lett. 87, 082502 (2001).
  2. N. A. Smirnova, A. De Maesschalck, A. Van Dyck, and K. Heyde, Phys. Rev. C 69, 044306 (2004).
  3. J. Dobaczewski, W. Nazarewicz, T. R. Werner, J. F. Berger, C. R. Chinn, and J. Decharge, Phys. Rev. C 53, 2809 (1996).
  4. B. Chen, J. Dobaczewski, K.-L. Kratz, K. Langanke, B. Pfeiffer, F.-K. Thielemann, and P. Vogel, Phys. Lett. B355, 37 (1995).
  5. C. Freiburghaus, J.-F. Rembges, T. Rauscher, E. Kolbe, F.-K. Thielemann, K.-L. Kratz, B. Pfeiffer, and J. J. Cowen, Astrophys. J. 516, 381 (1999).
  6. R. Surman and J. Engel, Phys. Rev. C 64, 035801 (2001).
  7. T. Rauscher, R. Bieber, H. Oberhummer, K.-L. Kratz, J. Dobaczewski, P. Möller, and M. M. Sharma, Phys. Rev. C 57, 2031 (1998).
  8. J. S. Thomas et al., Phys. Rev. C 71, 021302(R) (2005).
  9. D. W. Bardayan et al., Phys. Rev. C 63, 065802 (2001).
  10. http://www.micronsemiconductor.co.uk.
  11. L. A. Montestruque, M. C. Cobian-Rozak, G. Szaloky, J. D. Zumbro, and S. E. Darden, Nucl. Phys. A305, 29 (1978).
  12. J. P. Omtvedt, B. Fogelberg, and P. Hoff, Z. Phys. A 339, 349 (1991).
  13. J. M. Lohr and W. Haeberli, Nucl. Phys. A232, 381 (1974).
  14. R. L. Varner, W. J. Thompson, T. L. McAbee, E. J. Ludwig, and T. B. Clegg, Phys. Rep. 201, 57 (1991).
  15. J. S. Thomas, Ph.D. Thesis, Rutgers University, 2005.
  16. University of Surrey modified version of the code TWOFNR of M. Igarashi, M. Toyama, and N. Kishida (private communication).
  17. C. M. Perey and F. G. Perey, At. Data Nucl. Data Tables 17, 1 (1976).
  18. M. Bhat, Evaluated Nuclear Structure Data File (Springer-Verlag, Berlin, 1992), data extracted using the NNDC Online Data Service from the ENSDF database, file revised as of October 13, 2004.
  19. G. R. Satchler, Direct Nuclear Reactions (Oxford University Press, New York, 1983).
  20. J. Rapaport and A. K. Kerman, Nucl. Phys. A119, 641 (1968).
  21. J. Rapaport, A. Sperduto, and M. Salomaa, Nucl. Phys. A197, 337 (1972).
  22. J. L. C. Ford Jr., K. S. Toth, G. R. Satchler, D. C. Hensley, L. W. Owen, R. M. DeVries, R. M. Gaedke, P. J. Riley, and S. T. Thornton, Phys. Rev. C 10, 1429 (1974).
  23. H. J. Körner and J. P. Schiffer, Phys. Rev. Lett. 27, 1457 (1971).
  24. A. M. Mukhamedzhanov, C. A. Gagliardi, and R. E. Tribble, Phys. Rev. C 63, 024612 (2001).
  25. A. M. Mukhamedzhanov and F. M. Nunes, Phys. Rev. C 72, 017602 (2005).
  26. R. Machleidt, F. Sammarruca, and Y. Song, Phys. Rev. C 53, R1483 (1996).
  27. M. Hjorth-Jensen, T. T. S. Kuo, and E. Osnes, Phys. Rep. 261, 125 (1995).
  28. J. Duflo and A. P. Zuker, Phys. Rev. C 59, R2347 (1999).
  29. R. R. Whitehead, A. Watt, B. J. Cole, and I. Morrison, Advances in Nuclear Physics, edited by M. Baranger and E. Vogt (Plenum, New York, 1977), vol. 9.
  30. E. Caurier and F. Nowacki, Acta Phys. Pol. B 30, 705 (1999).
  31. E. Caurier, shell-model code ANTOINE, IRES, Strasbourg (1989–2004).
  32. K. Haravu, C. L. Hollas, P. J. Riley, and W. R. Coker, Phys. Rev. C 1, 938 (1970).
  33. T. P. Cleary, Nucl. Phys. A301, 317 (1978).
  34. R. D. Rathmell, P. J. Bjorkholm, and W. Haeberli, Nucl. Phys. A206, 459 (1973).
  35. W. E. Parker et al., Phys. Rev. C 52, 252 (1995).
  36. J. Okolowicz et al., Phys. Rep. 374, 271 (2004).
  37. N. Michel, W. Nazarewicz, M. Ploszajczak, and J. Okolowicz, Phys. Rev. C 67, 054311 (2003).
  38. A. Volya and V. Zelevinsky, Phys. Rev. Lett. 94, 052501 (2005).
  39. A. J. Koning and J. P. Delaroche, Nucl. Phys. A713, 231 (2003).
  40. G. E. Brown, Nucl. Phys. 57, 339 (1964).
  41. F. S. Dietrich, Phys. Rev. Lett. 38, 156 (1977).
  42. http://www-nds.iaea.org/RIPL-2/gamma/gdr-parameters-theor.dat.
  43. E. Krausmann, W. Balogh, H. Oberhummer, T. Rauscher, K.-L. Kratz, and W. Ziegart, Phys. Rev. C 53, 469 (1996).
  44. J. M. Blatt and V. F. Weisskopf, Theoretical Nuclear Physics (Wiley, New York, 1952).
  45. A. J. F. Siegart, Phys. Rev. 52, 787 (1937).
  46. A. DeShalit and H. Feshbach, Theoretical Nuclear Physics, Volume I: Nuclear Structure (Wiley, New York, 1974).
  47. J. M. Lafferty and S. R. Cotanch, Nucl. Phys. A373, 363 (1982).

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Phys. Rev. C 76, 044302– Published 3 October, 2007
  • Received 22 March 2007

© 2007 American Physical Society

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