On the nature of the dynamic magnetic fields acting on fast moving ions in magnetic materials

Brennan, J.M.; Benczer‐Koller, N.; Hass, M.; King, H.T.

doi:10.1007/bf01021837

Cited by 35 publications

(5 citation statements)

References 7 publications

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“…Figure3Precession angles !i()!g as a function of the number of polarized electrons per cm2 encountered by 82Se ions traversing iron and gadolinium foils. The linearity with respect to the foil thickness indicates that the transient field is approximately proportional to the velocity of the ion, while the fact that the same curves fit both the data for iron and gadolinium foils reflects the direct proportionality of the transient field to the magnetization of the foil(Brennan et al 1978a). Annu.…”

mentioning

confidence: 73%

Transient Magnetic Fields at Swift Ions Traversing Ferromagnetic Media and Application to Measurements of Nuclear Moments

Benczer‐Koller¹,

Hass²,

Sak³

1980

Annu. Rev. Nucl. Part. Sci.

149

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mentioning

confidence: 73%

Transient Magnetic Fields at Swift Ions Traversing Ferromagnetic Media and Application to Measurements of Nuclear Moments

Benczer‐Koller¹,

Hass²,

Sak³

1980

Annu. Rev. Nucl. Part. Sci.

149

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“…It is important to carry out precession measurements at well defined ion velocities in order to determine the electron configurations and the intricate mechanisms involved in TF. These conditions, in which the ions barely slow down (velocity-differential), are achieved either by choosing a very short lived nuclear state [22] or using thin ferromagnetic foils [19]. In both cases, the nuclear lifetime or the transit time of the ions through the foil has to be small compared to the slowing down time.…”

Section: Introductionmentioning

confidence: 99%

Light nuclei as distinct probes for transient magnetic fields

1981

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Salient features of transient magnetic fields are brought out from nuclear spin precession measurements on light ions penetrating polarized Fe-, Ni-and Gd-hosts. At low velocities ion fractions with single K-shell vacancies, at high velocities H-like charge state fractions, can account for the observed precessions. The data suggest a sharp reduction of the K-shell field at a velocity Vion~--0.5VO . Large degrees of K-shell polarization have been derived for C-and O-ions. Measurements in different ferromagnets show that the transient fields scale with the polarized electron density of the host.

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“…Absolute g(2 + 1 ) values were determined from their relative g-factor measurements by adopting g(2 + 1 ; 82 Se) = +0.496 (29) as the reference. This absolute g factor was deduced from a previous measurement of 82 Se 2 + 1 -state precession angles in iron and gadolinium hosts [32]. As the precession angles from Ref.…”

Section: B Transient-field G-factor Measurementsmentioning

confidence: 82%

“…As the precession angles from Ref. [32] were measured to study the TF, not to determine a g factor, it appears that the adopted g factor was obtained by re-analyzing those data using the Rutgers TF parametrization to calibrate the field strength. As such, this calibration g factor is not an independently determined quantity, and the accuracy of the magnitude of the reported g factors due to the normalizing g factor remains in question.…”

Section: B Transient-field G-factor Measurementsmentioning

confidence: 99%

First-excited state g factors in the stable, even Ge and Se isotopes

et al. 2019

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Transient-field g-factor measurements in inverse kinematics were performed for the first-excited states of the stable, even isotopes of Ge and Se. The g factors of 74 Ge and 74 Se were measured simultaneously using a cocktail beam, which eliminates most possible sources of systematic error in a relative g-factor measurement. The results are g( 74 Se)/g( 74 Ge) = 1.34 (7), g( 70 Ge)/g( 74 Ge) = 1.16(15), g( 72 Ge)/g( 74 Ge) = 0.92(13), g( 76 Ge)/g( 74 Ge) = 0.88(5), g( 76 Se)/g( 74 Se) = 0.96 (7), g( 78 Se)/g( 74 Se) = 0.82(5), g( 80 Se)/g( 74 Se) = 0.99(7) and g( 82 Se)/g( 74 Se) = 1.19(6). The measured g-factor ratios are in agreement with ratios from previous measurements, despite considerable variation in previous reported absolute values. The absolute values of the g factors remain uncertain, however the Rutgers parametrization was used to set the transient-field strength and then compare the experimental g factors with shell-model calculations based on the JUN45 and jj44b interactions. Modest agreement was found between experiment and theory for both interactions. The shell model calculations indicate that the g(2 + 1 ) values and trends are determined largely by the balance of the spin carried by orbital motion of the protons.

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On the nature of the dynamic magnetic fields acting on fast moving ions in magnetic materials

Cited by 35 publications

References 7 publications

Transient Magnetic Fields at Swift Ions Traversing Ferromagnetic Media and Application to Measurements of Nuclear Moments

Transient Magnetic Fields at Swift Ions Traversing Ferromagnetic Media and Application to Measurements of Nuclear Moments

Light nuclei as distinct probes for transient magnetic fields

First-excited state g factors in the stable, even Ge and Se isotopes

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