Studies of the Energy Dependence of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>p</mi></math>-<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>16</mn></mrow></msup></mrow></math> Interactions between 20 and 50 MeV. I. Measurements of the Differential Cross Sections of Protons Elastically Scattered by <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>16</mn></mrow></msup></mrow></math> at 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV

J. M. Cameron; J. Reginald Richardson; W. T. H. van Oers; J. W. Verba

doi:10.1103/PhysRev.167.908

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Studies of the Energy Dependence of $p$ - $O^{16}$ Interactions between 20 and 50 MeV. I. Measurements of the Differential Cross Sections of Protons Elastically Scattered by $O^{16}$ at 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV

J. M. Cameron, J. Reginald Richardson, W. T. H. van Oers^*, and J. W. Verba

Department of Physics, University of California, Los Angeles, California

^*Present address: Department of Physics, University of Manitoba, Winnipeg, Man., Canada.

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Phys. Rev. 167, 908 – Published 20 March, 1968

DOI: https://doi.org/10.1103/PhysRev.167.908

Abstract

Differential cross sections for the elastic scattering of protons by oxygen were measured at mean proton energies of 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV. The data cover center-of-mass scattering angles from 10 to 165 deg and have a relative uncertainty smaller than 2%. An oxygen gas target was bombarded with protons obtained, using the variable-energy extraction system of the UCLA sector-focused cyclotron. The scattered protons were detected, using an array of four NaI(Tl) scintillation counters. The results show the existence of strong resonances below 30 MeV which appreciably disort the monotonic energy variation found at the higher energies. The results have been compared with those obtained by other investigation in this energy region.

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[c1] L. Rosen, J. C. Beery, A. S. Goldhaber, and E. H. Auerbach, Ann. Phys. (N. Y.) 34, 96 (1965)

[c2] G. R. Satchler, Nucl. Phys. A92, 273 (1967)

[c3] M. P. Fricke, E. E. Gross, B. J. Morton, and A. Zucker, Phys. Rev. 156, 1207 (1967)

[c4] F. G. Perey, Phys. Rev. 131, 745 (1963)

[c5] B. Buck, Phys. Rev. 130, 712 (1963)

[c6] F. G. Perey and B. Buck, Nucl. Phys. 32, 353 (1962)

[c7] L. R. B. Elton, Nucl. Phys. 89, 69 (1966)

[c8] H. Feshbach, A. K. Kerman, and R. H. Lemmer, Ann. Phys. (N. Y.) 41, 230 (1967)

[c9] J. K. Dickens, D. A. Haner, and C. N. Waddell, Phys. Rev. 129, 743 (1963) ibid.132, 2159 (1963)

[c10] R. M. Craig, J. C. Dore, G. W. Greenlees, J. Lowe, and D. L. Watson, Nucl. Phys. 79, 177 (1966)

[c11] M. Q. Makino, C. N. Waddell, and R. M. Eisberg, Nucl. Phys. 68, 378 (1965)

[c12] J. Lowe and D. L. Watson, Phys. Letters 23, 261 (1966)

[c13] D. K. Scott, P. S. Fisher, and N. S. Chant, Nucl. Phys. A99, 177 (1967)

[c14] B. B. Kinsey, Phys. Rev. 99, 332 (1955)

[c15] W. W. Daehnick, Phys. Rev. 135, B1168 (1964)

[c16] E. T. Boschitz, M. Chabre, H. E. Conzett, and R. J. Slobodrian, in Proceedings of the 2nd International Symposium on Polarization Phenomena of Nucleons, Karlsruhe, 1965, edited by P. Huber and H. Schopper (Birkhäuser Verlag, Basel and Stuttgart, 1966)

[c17] E. T. Boschitz, Bull. Am. Phys. Soc. 11, 355 (1966)

[c18] A. C. Paul and B. T. Wright, IEEE Trans. Nucl. Sci. 13, 74 (1966) A. C. Paul, Ph.D. thesis, University of California at Los Angeles, 1967 (unpublished)

[c19] J. W. Verba, H. Willmes, R. F. Carlson, I. Šlaus, J. R. Richardson, and E. L. Petersen, Phys. Rev. 153, 1127 (1967)

[c20] B. M. Bardin and M. E. Rickey, Rev. Sci. Instr. 35, 902 (1964)

[c21] W. H. Barkas and M. J. Berger, Tables of Energy Losses and Ranges of Heavy Charged Particles (National Aeronautics and Space Administration, Washington, D. C., 1964)

[c22] L. H. Johnston and Y. S. Tsai, Phys. Rev. 115, 1293 (1959) C. J. Batty, G. H. Stafford, and R. S. Gilmore, Nucl. Phys. 51, 225 (1964)

[c23] E. A. Silverstein, Nucl. Instr. Methods 4, 53 (1959)

[c24] C. T. Chase and R. T. Cox, Phys. Rev. 58, 243 (1940)

[c25] L. H. Johnston, D. H. Service, and D. A. Swenson, IRE Trans. Nucl. Sci. 5, 95 (1958)

[c26] K. G. Dedrick, Rev. Mod. Phys. 34, 429 (1963)

[c27] E. J. Burge and D. A. Smith, Rev. Sci. Instr. 33, 1371 (1962)

[c28] C. C. Kim, S. M. Bunch, D. W. Devins, and H. H. Forster, Nucl. Phys. 58, 23 (1964)

[c29] B. W. Ridley and J. F. Turner, Nucl. Phys. 58, 497 (1964)

[c30] J. A. Fannon, E. J. Burge, D. A. Smith, and N. K. Ganguly, Nucl. Phys. A97, 263 (1967)

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Studies of the Energy Dependence of $p$ - $O^{16}$ Interactions between 20 and 50 MeV. I. Measurements of the Differential Cross Sections of Protons Elastically Scattered by $O^{16}$ at 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV

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Studies of the Energy Dependence of p-O16 Interactions between 20 and 50 MeV. I. Measurements of the Differential Cross Sections of Protons Elastically Scattered by O16 at 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV

Abstract

References (30)

Studies of the Energy Dependence of $p$ - $O^{16}$ Interactions between 20 and 50 MeV. I. Measurements of the Differential Cross Sections of Protons Elastically Scattered by $O^{16}$ at 23.4, 24.5, 27.3, 30.1, 34.1, 36.8, 39.7, 43.1, and 46.1 MeV