Polarization of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Mn</mi></mrow><mrow><mn>55</mn></mrow></msup></mrow></math></span> Nuclei: Cryogenic Aspects

J. W. T. Dabbs; L. D. Roberts

doi:10.1103/PhysRev.95.970

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Polarization of ${Mn}^{55}$ Nuclei: Cryogenic Aspects

J. W. T. Dabbs and L. D. Roberts

Oak Ridge National Laboratory, Oak Ridge, Tennessee

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Phys. Rev. 95, 970 – Published 15 August, 1954

DOI: https://doi.org/10.1103/PhysRev.95.970

Abstract

A brief discussion of certain cryogenic aspects of nuclear polarization is given. This discussion is applied to ${Mn}^{55}$ in the paramagnetic salt Mn ${(N D_{4})}_{2}$ ${(S O_{4})}_{2}$ ·6 $D_{2}$ O. Measurements on this salt of the temperature in the range $0.12 ° \leq T \leq 0.35 °$ K and of magnetic moment up to 90 percent of saturation as a function of magnetic field in the range $660 \leq H \leq 4560$ gauss and for an entropy $\frac{S}{R} = 0.514$ are described. These measurements are used to calculate the nuclear polarization as a function of field in this magnetic field range and at this entropy, and they form the cryogenic basis for ${Mn}^{55}$ polarization experiments reported previously.

References (22)

Bernstein, Roberts, Stanford, Dabbs, and Stephenson, Phys. Rev. 94, 1243 (1954)
M. E. Rose, Oak Ridge National Laboratory Report ORNL-48, 1948 (unpublished) Phys. Rev. 75, 213 (1949)
C. J. Gorter, Physica 14, 504 (1948)
C. J. Gorter, Physik. Z. 35, 923 (1934)
N. Kurti and F. Simon, Proc. Roy. Soc. (London) 149, 152 (1935)
Rose, Simon, and Jauch, Phys. Rev. 84, 1155 (1951)
W. J. de Haas and E. C. Wiersma, Physica 3, 491 (1936)
H. B. G. Casimir, Magnetism and Very Low Temperatures (Cambridge University Press, Cambridge, 1940)
B. Bleaney and D. J. E. Ingram, Proc. Roy. Soc. (London) 205, 336 (1951)
T. S. England and E. E. Schneider, Nature 166, 437 (1950) D. J. E. Ingram, Proc. Phys. Soc. (London) A66, 412 (1953) R. S. Trenhan, A66, 118 (1953)
[8], p. 20
W. J. de Haas and E. C. Wiersma, Physica 2, 335 (1935)
L. D. Roberts and J. W. T. Dabbs, paper presented at the Southeastern Section meeting, American Physical Society, April, 1954 [Phys. Rev. 95, 307(A) (1954)]
H. Van Dijk and D. Shoenberg, Nature 164, 151 (1949)
J. Kistemaker, Physica 12, 272, 281 (1946)
R. A. Erickson and L. D. Roberts, Phys. Rev. 93, 957 (1954)
Erickson, Roberts, and Dabbs, Rev. Sci. Instr. (to be published)
D. de Klerk, thesis, Leiden, 1948 (unpublished)
R. L. Platzman, Phil. Mag. 44, 497 (1953)
N. Kurti and F. Simon, Phil. Mag. 44, 501 (1953)
R. A. Erickson and L. D. Roberts (unpublished)
A. H. Cooke, Proc. Phys. Soc. (London) A62, 269 (1949)

[c1] Bernstein, Roberts, Stanford, Dabbs, and Stephenson, Phys. Rev. 94, 1243 (1954)

[c2] M. E. Rose, Oak Ridge National Laboratory Report ORNL-48, 1948 (unpublished) Phys. Rev. 75, 213 (1949)

[c3] C. J. Gorter, Physica 14, 504 (1948)

[c4] C. J. Gorter, Physik. Z. 35, 923 (1934)

[c5] N. Kurti and F. Simon, Proc. Roy. Soc. (London) 149, 152 (1935)

[c6] Rose, Simon, and Jauch, Phys. Rev. 84, 1155 (1951)

[c7] W. J. de Haas and E. C. Wiersma, Physica 3, 491 (1936)

[c8] H. B. G. Casimir, Magnetism and Very Low Temperatures (Cambridge University Press, Cambridge, 1940)

[c9] B. Bleaney and D. J. E. Ingram, Proc. Roy. Soc. (London) 205, 336 (1951)

[c10] T. S. England and E. E. Schneider, Nature 166, 437 (1950) D. J. E. Ingram, Proc. Phys. Soc. (London) A66, 412 (1953) R. S. Trenhan, A66, 118 (1953)

[c11] [8], p. 20

[c12] W. J. de Haas and E. C. Wiersma, Physica 2, 335 (1935)

[c13] L. D. Roberts and J. W. T. Dabbs, paper presented at the Southeastern Section meeting, American Physical Society, April, 1954 [Phys. Rev. 95, 307(A) (1954)]

[c14] H. Van Dijk and D. Shoenberg, Nature 164, 151 (1949)

[c15] J. Kistemaker, Physica 12, 272, 281 (1946)

[c16] R. A. Erickson and L. D. Roberts, Phys. Rev. 93, 957 (1954)

[c17] Erickson, Roberts, and Dabbs, Rev. Sci. Instr. (to be published)

[c18] D. de Klerk, thesis, Leiden, 1948 (unpublished)

[c19] R. L. Platzman, Phil. Mag. 44, 497 (1953)

[c20] N. Kurti and F. Simon, Phil. Mag. 44, 501 (1953)

[c21] R. A. Erickson and L. D. Roberts (unpublished)

[c22] A. H. Cooke, Proc. Phys. Soc. (London) A62, 269 (1949)

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Polarization of ${Mn}^{55}$ Nuclei: Cryogenic Aspects

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Polarization of Mn55 Nuclei: Cryogenic Aspects

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Polarization of ${Mn}^{55}$ Nuclei: Cryogenic Aspects