Angular Distribution of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Al</mi></mrow><mrow><mn>27</mn></mrow></msup></mrow><mo>(</mo><mi>d</mi><mo>,</mo><mi>α</mi><mo>)</mo><mrow><msup><mrow><mi mathvariant="normal">Mg</mi></mrow><mrow><mn>25</mn></mrow></msup></mrow></math></span> Reaction and Energy Levels in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Mg</mi></mrow><mrow><mn>25</mn></mrow></msup></mrow></math></span>

A. D. Schelberg; M. B. Sampson; R. G. Cochran

doi:10.1103/PhysRev.80.574

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Angular Distribution of the ${Al}^{27} (d, α) {Mg}^{25}$ Reaction and Energy Levels in ${Mg}^{25}$

A. D. Schelberg, M. B. Sampson, and R. G. Cochran

Department of Physics, Indiana University, Bloomington, Indiana

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Phys. Rev. 80, 574 – Published 15 November, 1950

DOI: https://doi.org/10.1103/PhysRev.80.574

Abstract

The energy distribution and angular dependence of the alpha-particle groups from the nuclear reaction ${Al}^{27} (d, α) {Mg}^{25}$ have been investigated. A magnetically analyzed beam of 11.1 Mev deuterons was used. Eleven alpha-particle groups were measured, corresponding to ten excited levels in ${Mg}^{25}$ at 0.57, 0.96, 1.63, 1.97, 2.74, 3.36, 4.01, 4.81, 5.48, and 5.95 Mev. The ground state $Q$ -value for the reaction was found to be 6.58±0.03 Mev, giving a value for the mass difference ${Al}^{27}$ - ${Mg}^{25}$ of 1.99626±0.00003 mass units. The intensities of all the groups, with the exception of $Q_{2}$ , show marked dependence on the angle of measurement. The average spacing of the levels in ${Mg}^{25}$ is 0.6 Mev, and is nearly constant over the range studied.

References (10)

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[c1] E. McMillan and E. O. Lawrence, Phys. Rev. 47, 343 (1935)

[c2] Pollard, Sailor, and Wyly, Phys. Rev. 75, 725 (1949)

[c3] A. P. French and P. B. Treacy, Proc. Phys. Soc. London 63, 665 (1950)

[c4] M. S. Livingston and H. A. Bethe, Rev. Mod. Phys. 9, 278 (1937)

[c5] H. T. Gittings, Rev. Sci. Inst. 20, 325 (1949)

[c6] M. G. Holloway and M. S. Livingston, Phys. Rev. 54, 18 (1938)

[c7] H. A. Bethe, Elementary Nuclear Theory (John Wiley & Sons, Inc., New York, 1947)

[c8] Allan, Wilkinson, Burcham, and Curling, Nature 163, 210 (1949)

[c9] H. W. Fulbright and R. R. Bush, Phys. Rev. 74, 1323 (1948)

[c10] E. Bleuler and W. Zünti, Helv. Phys. Acta 20, 195 (1947)

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Angular Distribution of the ${Al}^{27} (d, α) {Mg}^{25}$ Reaction and Energy Levels in ${Mg}^{25}$

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Angular Distribution of the Al27(d,α)Mg25 Reaction and Energy Levels in Mg25

Abstract

References (10)

Angular Distribution of the ${Al}^{27} (d, α) {Mg}^{25}$ Reaction and Energy Levels in ${Mg}^{25}$