Study of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Nb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>93</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Levels with the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Mo</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>96</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mi>p</mi><mo>,</mo><mi>α</mi><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">Nb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>93</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Reaction

Yong Sook Park; H. D. Jones; D. E. Bainum

doi:10.1103/PhysRevC.7.445

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Study of ${}^{93}{Nb}$ Levels with the ${}^{96}{Mo} (p, α) {}^{93}{Nb}$ Reaction

Yong Sook Park, H. D. Jones, and D. E. Bainum

U.S. Army Ballistic Research Laboratories, Aberdeen Proving Ground, Maryland 21005

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Phys. Rev. C 7, 445 – Published 1 January, 1973

DOI: https://doi.org/10.1103/PhysRevC.7.445

Abstract

Levels of ${}^{93}{Nb}$ have been studied with the ${}^{96}{Mo} (p, α)$ reaction at 15-MeV incident energy. Angular distributions for transitions to a dozen prominent levels below 2 MeV have been measured with 30- to 40-keV experimental resolution over $15^{\circ} \leq θ_{L} \leq 150^{\circ}$ , and they have been compared with distorted-wave Born-approximation (DWBA) calculations. Angular distributions for $p - {}^{96}{Mo}$ and $α - {}^{93}{Nb}$ elastic scattering have also been measured, and proton and $α$ -optical-model potential parameter sets have been determined by a search procedure. Of the three sets of $α$ -potential parameters, the one which best reproduced the measured ( $p, α$ ) angular distributions of known low-lying levels in ${}^{93}{Nb}$ was chosen as the standard set for the rest of the ( $p, α$ ) calculations. The conventional triton-cluster form factor was used exclusively for the ( $p, α$ ) DWBA calculations which lead to $J^{π}$ assignments. A semimicroscopic form factor was used in a few test cases in order to check the sensitivity of calculations to the choice of form factor. Reliable $J^{π}$ assignments have been made for levels below 1.5 MeV based on the $j$ dependence for $l = 1 (p, α)$ transfers, as well as for higher angular momentum transfers observed in the present work; and they are in excellent agreement with those determined from recent Coulomb-excitation and ${}^{90}{Zr} (α, p γ)$ works. Dominant three-nucleon shell-model configurations to which the levels of interest belong have been proposed.

References (34)

V. C. Rogers, L. E. Beghian, F. M. Clikeman, F. Hofman, and S. Wilensky, Nucl. Phys. A142, 100 (1970)
H. Gobel, E. J. Feicht, and H. Vonach, Z. Physik 240, 430 (1970)
P. H. Stelson, R. L. Robinson, W. T. Milner, F. K. McGowan, and M. A. Ludington, Bull. Am. Phys. Soc. 16, 619 (1971)
M. Kregar and G. G. Seaman, Nucl. Phys. A179, 153 (1972)
K. H. Bhatt and J. B. Ball, Nucl. Phys. 63, 286 (1965) N. Auerbach and I. Talmi, 64, 458 (1965) J. Vervier, ibid. 75, 17 (1965)
H. Ohnuma and J. L. Yntema, Phys. Rev. 176, 1416 (1968)
M. R. Cates, J. B. Ball, and E. Newman, Phys. Rev. 187, 1682 (1969)
N. Austern, Direct Nuclear Reaction Theories (Wiley-Interscience, New York, 1970)
M. S. Zisman and B. G. Harvey, Phys. Rev. C 5, 1031 (1972)
J. P. Schiffer, J. Phys. Soc. Japan, Suppl. 24, 319 (1968)
L. L. Lee, Jr., A. Marinov, C. Mayer-Boricke, J. P. Schiffer, R. H. Bassel, R. M. Drisco, and G. R. Satchler, Phys. Rev. Letters 14, 261 (1965)
J. A. Nolen, Jr., and C. M. Glashausser, Phys. Letters 21, 705 (1966)
D. L. Dittmer and W. W. Daehnick, Phys. Rev. C 2, 238 (1970)
R. O. Ginaven and A. M. Bernstein, Nucl. Phys. A154, 417 (1970)
D. Bucurescu, M. Ivascu, G. Semenescu, and M. Titirici, Nucl. Phys. A189, 577 (1972)
Yong Sook Park, H. D. Jones, and D. E. Bainum, Phys. Rev. C 4, 778 (1971)
B. F. Bayman, Argonne National Laboratory Report No. ANL-6878, 335, 1964 (unpublished)
B. F. Bayman and E. Rost, unpublished ([19])
J. A. Nolen, Jr., Ph.D. thesis, Princeton University, 1965 (unpublished)
R. M. Drisko, unpublished ([14])
C. B. Fulmer and J. B. Ball, Phys. Rev. 140, B330 (1965)
Yong Sook Park, H. D. Jones, D. E. Bainum, and A. W. Barrows, Jr., U.S. Army Ballistic Research Laboratories Report No. 1564, 1971 (unpublished)
Omitted endnote
W. R. Smith, Argonne National Laboratory Report No. ANL-6848, 30, 1964 (unpublished)
Omitted endnote
Omitted endnote
P. J. A. Buttle and L. J. B. Goldfarb, Proc. Phys. Soc. (London) 83, 701 (1964)
B. Hird and T. Y. Li, Can. J. Phys. 46, 1273 (1968)
R. Stock, R. Bock, P. David, H. H. Duhm, and T. Tamura, Nucl. Phys. A104, 137 (1967)
W. W. Daehnick and Y. S. Park, Phys. Rev. 180, 1062 (1969) Y. S. Park, Ph.D. thesis, University of Pittsburgh, 1968 (unpublished)
R. M. Tapphorn and R. Shnidman, to be published
S. H. Suck, University of Texas, private communication
S. H. Suck and W. R. Coker, Nucl. Phys. A176, 89 (1971)
F. Rybicki, Temple University, private communication

[c1] V. C. Rogers, L. E. Beghian, F. M. Clikeman, F. Hofman, and S. Wilensky, Nucl. Phys. A142, 100 (1970)

[c2] H. Gobel, E. J. Feicht, and H. Vonach, Z. Physik 240, 430 (1970)

[c3] P. H. Stelson, R. L. Robinson, W. T. Milner, F. K. McGowan, and M. A. Ludington, Bull. Am. Phys. Soc. 16, 619 (1971)

[c4] M. Kregar and G. G. Seaman, Nucl. Phys. A179, 153 (1972)

[c5] K. H. Bhatt and J. B. Ball, Nucl. Phys. 63, 286 (1965) N. Auerbach and I. Talmi, 64, 458 (1965) J. Vervier, ibid. 75, 17 (1965)

[c6] H. Ohnuma and J. L. Yntema, Phys. Rev. 176, 1416 (1968)

[c7] M. R. Cates, J. B. Ball, and E. Newman, Phys. Rev. 187, 1682 (1969)

[c8] N. Austern, Direct Nuclear Reaction Theories (Wiley-Interscience, New York, 1970)

[c9] M. S. Zisman and B. G. Harvey, Phys. Rev. C 5, 1031 (1972)

[c10] J. P. Schiffer, J. Phys. Soc. Japan, Suppl. 24, 319 (1968)

[c11] L. L. Lee, Jr., A. Marinov, C. Mayer-Boricke, J. P. Schiffer, R. H. Bassel, R. M. Drisco, and G. R. Satchler, Phys. Rev. Letters 14, 261 (1965)

[c12] J. A. Nolen, Jr., and C. M. Glashausser, Phys. Letters 21, 705 (1966)

[c13] D. L. Dittmer and W. W. Daehnick, Phys. Rev. C 2, 238 (1970)

[c14] R. O. Ginaven and A. M. Bernstein, Nucl. Phys. A154, 417 (1970)

[c15] D. Bucurescu, M. Ivascu, G. Semenescu, and M. Titirici, Nucl. Phys. A189, 577 (1972)

[c16] Yong Sook Park, H. D. Jones, and D. E. Bainum, Phys. Rev. C 4, 778 (1971)

[c17] B. F. Bayman, Argonne National Laboratory Report No. ANL-6878, 335, 1964 (unpublished)

[c18] B. F. Bayman and E. Rost, unpublished ([19])

[c19] J. A. Nolen, Jr., Ph.D. thesis, Princeton University, 1965 (unpublished)

[c20] R. M. Drisko, unpublished ([14])

[c21] C. B. Fulmer and J. B. Ball, Phys. Rev. 140, B330 (1965)

[c22] Yong Sook Park, H. D. Jones, D. E. Bainum, and A. W. Barrows, Jr., U.S. Army Ballistic Research Laboratories Report No. 1564, 1971 (unpublished)

[c23] Omitted endnote

[c24] W. R. Smith, Argonne National Laboratory Report No. ANL-6848, 30, 1964 (unpublished)

[c25] Omitted endnote

[c26] Omitted endnote

[c27] P. J. A. Buttle and L. J. B. Goldfarb, Proc. Phys. Soc. (London) 83, 701 (1964)

[c28] B. Hird and T. Y. Li, Can. J. Phys. 46, 1273 (1968)

[c29] R. Stock, R. Bock, P. David, H. H. Duhm, and T. Tamura, Nucl. Phys. A104, 137 (1967)

[c30] W. W. Daehnick and Y. S. Park, Phys. Rev. 180, 1062 (1969) Y. S. Park, Ph.D. thesis, University of Pittsburgh, 1968 (unpublished)

[c31] R. M. Tapphorn and R. Shnidman, to be published

[c32] S. H. Suck, University of Texas, private communication

[c33] S. H. Suck and W. R. Coker, Nucl. Phys. A176, 89 (1971)

[c34] F. Rybicki, Temple University, private communication

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Study of ${}^{93}{Nb}$ Levels with the ${}^{96}{Mo} (p, α) {}^{93}{Nb}$ Reaction

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Study of Nb93 Levels with the Mo96(p,α)Nb93 Reaction

Abstract

References (34)

Study of ${}^{93}{Nb}$ Levels with the ${}^{96}{Mo} (p, α) {}^{93}{Nb}$ Reaction