Large electron polarization of H-like20Ne-ions traversing gd foils at very high velocities

K. H. Speidel; J. Cub; U. Reuter; F. Passek; H. J. Wollersheim; N. Martin; P. Egelhof; H. Emling; W. Henning; R. S. Simon; R. Schmidt; H. J. Simonis; N. Gollwitzer

doi:10.1007/BF01284063

Large electron polarization of H-like²⁰Ne-ions traversing gd foils at very high velocities

K. H. Speidel
, J. Cub
, U. Reuter
, F. Passek
, H. J. Wollersheim
, N. Martin
, P. Egelhof
, H. Emling
, W. Henning
, R. S. Simon
, R. Schmidt
, H. J. Simonis
, N. Gollwitzer

Technical University of Munich
GSI Helmholtz Center
University of Bonn
University of Munich

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

It is shown that transient magnetic fields in Gd-host for²⁰Ne ions at a mean velocity of 12.5v₀(v₀=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v_1s=10v₀), are dominated by the Fermi contact field of these electrons. The first excited 2⁺-state of²Ne was used as probe. The derived value for the mean degree of polarization p_1s=0.32(13), is surprisingly large, though still consistent with values obtained at lower velocities. Present calculations of spin exchange cross sections severely underestimate the observed polarization at this high velocity.

Original language	English
Pages (from-to)	265-268
Number of pages	4
Journal	Zeitschrift fur Physik A Hadrons and Nuclei
Volume	339
Issue number	2
DOIs	https://doi.org/10.1007/BF01284063
State	Published - Jun 1991
Externally published	Yes

Keywords

25.70.-z
27.30.+ t
34.80.Nz

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10.1007/BF01284063

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Speidel, K. H., Cub, J., Reuter, U., Passek, F., Wollersheim, H. J., Martin, N., Egelhof, P., Emling, H., Henning, W., Simon, R. S., Schmidt, R., Simonis, H. J., & Gollwitzer, N. (1991). Large electron polarization of H-like²⁰Ne-ions traversing gd foils at very high velocities. Zeitschrift fur Physik A Hadrons and Nuclei, 339(2), 265-268. https://doi.org/10.1007/BF01284063

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title = "Large electron polarization of H-like20Ne-ions traversing gd foils at very high velocities",

abstract = "It is shown that transient magnetic fields in Gd-host for20Ne ions at a mean velocity of 12.5v0(v0=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v1s=10v0), are dominated by the Fermi contact field of these electrons. The first excited 2+-state of2Ne was used as probe. The derived value for the mean degree of polarization p1s=0.32(13), is surprisingly large, though still consistent with values obtained at lower velocities. Present calculations of spin exchange cross sections severely underestimate the observed polarization at this high velocity.",

keywords = "25.70.-z, 27.30.+ t, 34.80.Nz",

author = "Speidel, \{K. H.\} and J. Cub and U. Reuter and F. Passek and Wollersheim, \{H. J.\} and N. Martin and P. Egelhof and H. Emling and W. Henning and Simon, \{R. S.\} and R. Schmidt and Simonis, \{H. J.\} and N. Gollwitzer",

year = "1991",

month = jun,

doi = "10.1007/BF01284063",

language = "English",

volume = "339",

pages = "265--268",

journal = "Zeitschrift fur Physik A Hadrons and Nuclei",

issn = "0939-7922",

publisher = "Springer Verlag",

number = "2",

}

TY - JOUR

T1 - Large electron polarization of H-like20Ne-ions traversing gd foils at very high velocities

AU - Speidel, K. H.

AU - Cub, J.

AU - Reuter, U.

AU - Passek, F.

AU - Wollersheim, H. J.

AU - Martin, N.

AU - Egelhof, P.

AU - Emling, H.

AU - Henning, W.

AU - Simon, R. S.

AU - Schmidt, R.

AU - Simonis, H. J.

AU - Gollwitzer, N.

PY - 1991/6

Y1 - 1991/6

N2 - It is shown that transient magnetic fields in Gd-host for20Ne ions at a mean velocity of 12.5v0(v0=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v1s=10v0), are dominated by the Fermi contact field of these electrons. The first excited 2+-state of2Ne was used as probe. The derived value for the mean degree of polarization p1s=0.32(13), is surprisingly large, though still consistent with values obtained at lower velocities. Present calculations of spin exchange cross sections severely underestimate the observed polarization at this high velocity.

AB - It is shown that transient magnetic fields in Gd-host for20Ne ions at a mean velocity of 12.5v0(v0=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v1s=10v0), are dominated by the Fermi contact field of these electrons. The first excited 2+-state of2Ne was used as probe. The derived value for the mean degree of polarization p1s=0.32(13), is surprisingly large, though still consistent with values obtained at lower velocities. Present calculations of spin exchange cross sections severely underestimate the observed polarization at this high velocity.

KW - 25.70.-z

KW - 27.30.+ t

KW - 34.80.Nz

UR - https://www.scopus.com/pages/publications/4043166417

U2 - 10.1007/BF01284063

DO - 10.1007/BF01284063

M3 - Article

AN - SCOPUS:4043166417

SN - 0939-7922

VL - 339

SP - 265

EP - 268

JO - Zeitschrift fur Physik A Hadrons and Nuclei

JF - Zeitschrift fur Physik A Hadrons and Nuclei

IS - 2

ER -

Large electron polarization of H-like²⁰Ne-ions traversing gd foils at very high velocities

Abstract

Keywords

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