Transition from asymmetric to symmetric fission in the 235U(n,f) reaction

Physical Review C - Nuclear Physics

Volumn 64, Issue 5, 2001, Pages 546131-5461322

  Younes, W ^a   Becker, J A ^a   Bernstein, L A ^a   Garrett, P E ^a   McGrath, C A ^a,c   McNabb, D P ^a   Nelson, R O ^b   Johns, G D ^b   Wilburn, W S ^b   Drake, D M ^b  

^a LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

^b LOS ALAMOS NATIONAL LABORATORY   (United States)

^c IDAHO NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 14344281808     PISSN: 05562813     EISSN: 1089490X     Source Type: Journal    
DOI: 10.1103/PhysRevC.64.054613     Document Type: Article

References (55)

1. [1] O. Hahn and F. Strassman, Naturwissenschaften 27, 11 (1939).
2. [2] T. von Egidy, P. Kienle, U. Köster, D. Habs, M. Gross, O. Kester, H. J. Maier, and P. G. Thirolf, Acta Phys. Slov. 49, 107 (1999).
3. [3] J. W. Negele, S. E. Koonin, P. Möller, J. R. Nix, and A. J. Sierk, Phys. Rev. C 17, 1098 (1978).
4. [4] A. Turkevich and J. B. Niday, Phys. Rev. 84, 52 (1951).
5. [5] H. C. Britt, H. E. Wegner, and J. C. Gursky, Phys. Rev. 129, 2239 (1963).
6. [6] C. Budtz-Jørgensen and H.-H. Knitter, Nucl. Phys. A490, 307 (1988).
7. [7] M. S. Samant, R. P. Anand, R. K. Choudhury, S. S. Kapoor, and D. M. Nadkarni, Phys. Rev. C 51, 3127 (1995).
8. [8] E. A. C. Crouch, At. Data Nucl. Data Tables 19, 417 (1977).
9. [9] M. F. James, R. W. Mills, and D. R. Weaver, Prog. Nucl. Energy 26, 1 (1991).
10. [10] T. R. England and B. F. Rider, Tech. Rep. LA-UR-94-3106. LANL, 1994 (unpublished).
11. [11] M. Lammer, Tech. Rep. IAEA-TECDOC-1168, IAEA, 2000 (unpublished).
12. [12] J. L. Cook, E. K. Rose, and G. D. Trimble, Aust. J. Phys. 29, 125 (1976).
13. [13] C. Straede, C. Budtz-Jørgensen, and H.-H. Knitter, Nucl. Phys. A462, 85 (1987).
14. [14] A. C. Wahl, R. L. Ferguson, D. R. Nethaway, D. E. Troutner, and K. Wolfsberg, Phys. Rev. 126, 1112 (1962).
15. [15] A. C. Wahl, Phys. Rev. C 32, 184 (1985).
16. [16] B. D. Wilkins, E. P. Steinberg, and R. R. Chasman, Phys. Rev. C 14, 1832 (1976).
17. [17] L. E. Glendenin, J. E. Gindler, D. J. Henderson, and J. W. Meadows, Phys. Rev. C 24, 2600 (1981).
18. [18] A. Bohr and B. R. Mottelson, Nuclear Structure, 2nd ed. (World Scientific, Singapore, 1998), Vol. 2.
19. [19] D. P. McNabb, Tech. Rep. UCRL-ID-139906, LLNL, 1999 (unpublished).
20. [20] J. F. Briesmeister, Tech. Rep. LA-7396-M-Rev.2, LANL, 1986 (unpublished).
21. [21] S. A. Wender, S. Balestrini, A. Brown, R. C. Haight, C. M. Laymon, T. M. Lee, P. W. Lisowski, W. McCorkle, R. O. Nelson, W. Parker, and N. Hill, Nucl. Instrum. Methods Phys. Res. A 336, 226 (1993).
22. [22] P. W. Lisowski, C. D. Bowman. G. J. Russell, and S. A. Wender, Nucl. Sci. Eng. 106, 208 (1990).
23. [23] J. A. Becker and R. O. Nelson, Nucl. Phys. News Int. 7, 11 (1997).
24. [24] The absorber thicknesses were decreased over the course of the run from 3″ to 1/2″ for Pb, and from 2″ to 1″ for the polyethylene stack.
25. 235U experiment where a more reliable measurement of sample thickness was carried out.
26. [26] G. Palameta and J. C. Waddington, Nucl. Instrum. Methods Phys. Res. A 234, 476 (1985).
27. [27] D. C. Radford, Nucl. Instrum. Methods Phys. Res. A 361, 297 (1995).
28. [28] Data extracted using the NNDC On-Line Data Service from the ENSDF database, file revised as of 7/17/00. M. R. Bhat, in Nuclear Data for Science and Technology, edited by S. M. Qaim (Springer-Verlag, Berlin, Germany, 1992), p. 817.
29. [29] W. Younes, the XGAM peak-fitting code (to be published).
30. [30] P. Rose, Tech. Rep. BNL-NCS-17541, BNL, 1992 (unpublished).
31. [31] P. W. Lisowski, J. L. Ullmann, S. J. Balestrini, A. D. Carlson, O. A. Wasson, and N. W. Hill, in Proceedings of the Conference on Nuclear Data for Science and Technology, edited by S. Igarashi (Saikon Publishing Company. Tokyo, 1988), p. 97.
32. [32] V. Goldanskii, V. S. Pen'kina, and E. Z. Tarumov, Zh. Eksp. Teor. Fiz. 29, 778 (1955) [Sov. Phys. JETP 2, 677 (1956)].
33. [32] V. Goldanskii, V. S. Pen'kina, and E. Z. Tarumov, Zh. Eksp. Teor. Fiz. 29, 778 (1955) [Sov. Phys. JETP 2, 677 (1956)].
34. [33] Calculations of slowing time in the uranium sample were performed using the program ENELOSS, written by H. Ernst (1981).
35. [34] W. Younes, J. A. Becker, L. A. Bernstein, P. E. Garrett, C. A. McGrath, D. P. McNabb, R. O. Nelson, M. Devlin, N. Fotiades, and G. D. Johns, Tech. Rep. UCRL-ID-140313, LLNL, 2000 (unpublished).
36. n (Mev) ≤ 250 (to be published).
37. [36] J. B. Wilhelmy, E. Cheifetz, R. C. Jared, S. G. Thompson, H. R. Bowman, and J. O. Rasmussen, Phys. Rev. C 5, 2041 (1972).
38. [37] M. James and R. Mills, Tech. Rep. AEA-TRS-1015, 1018 and 1019, UKAEA, BNF, PLC and Nuclear Electric, 1993 (unpublished), MAT # 9240, June 1993; data retrieved from the ENDF database.
39. [38] J. Terrell, Phys. Rev. 127, 880 (1962).
40. f.
41. [40] A. C. Wahl, At. Data Nucl. Data Tables 39, 1 (1988).
42. [41] C. J. Bishop, R. Vandenbosch, R. Aley, R. W. Shaw, Jr., and I. Halpern, Nucl. Phys. A150, 129 (1970).
43. [42] P. R. Bevington and D. K. Robinson, Data Reduction and Error Analysis for the Physical Sciences, 2nd ed. (McGraw-Hill, San Francisco, 1992).
44. [43] E. M. Kozulin, A. Y. Rusanov, and G. N. Smirenkin, Phys. At. Nucl. 56, 166 (1993).
45. [44] I. F. Croall and J. G. Cuninghame, Nucl. Phys. A125, 402 (1969).
46. [45] S. Baba, H. Umezawa, and H. Baba, Nucl. Phys. A175, 177 (1971).
47. [46] L. N. Andronenko, A. A. Kotov, M. M. Nesterov, V. F. Petrov, N. A. Tarasov, L. A. Vaishnene, and W. Neubert, Z. Phys. A 318, 97 (1984).
48. [47] D. J. Hinde, R. J. Charity, G. S. Foote, J. R. Leigh, J. O. Newton, S. Ogaza, and A. Chattejee, Nucl. Phys. A452, 550 (1985).
49. [48] A. Gavron, J. R. Beene, B. Cheynis, R. L. Ferguson, F. E. Obenshain, F. Plasil, G. R. Young, G. A. Petitt, C. F. Maguire D. G. Sarantites, M. Jääskeläinen, and K. Geofrroy-Young, Phys. Rev. C 27, 450 (1983).
50. [49] D. J. Hinde, H. Ogata, M. Tanaka, T. Shimoda, N. Takahashi, A. Shinohara, S. Wakamatsu, K. Katori, and H. Okamura, Phys. Rev. C 39, 2268 (1989).
51. [50] A. Gavron et al., Phys. Rev. C 35, 579 (1987).
52. [51] M. Blann, Code ALICE 85/300, Tech. Rep. UCID-20169, LLNL, 1984 (unpublished).
53. [52] M. B. Chadwick (private communication).
54. [53] B. E. Watt, Phys. Rev. 87, 1037 (1952).
55. [54] M. M. Islam and H.-H. Knitter, Nucl. Sci. Eng. 50, 108 (1973).