Large transient magnetic fields of 28Si ions in backscattering through Fe at high velocities

Speidel, K.‐H.; Jakob, G.; Grabowy, U.; Cub, J.; Kremeyer, S.; Büsch, H.; Gohla, A.; Jessensky, O.; Gerber, J.; Meens, A.

doi:10.1016/0370-2693(94)90398-0

“…The results are a Fe = 10.9± 0.6 T ͑ 2 = 1.8͒ for Fe hosts and a Gd =16±1 T ͑ 2 = 2.9͒ for Gd. These parameters are very close to the previously adopted values [24]. Note that the quality of the fit is considerably worse than that obtained with the model-based parametrization, Eq.…”

Section: ͑2͒supporting

confidence: 78%

“…As a starting point, the transientfield strength must be studied and parametrized for ion velocities that extend well beyond Zv 0 . The purpose of the present paper is to summarize existing data [2,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] for light ions ͑6 ഛ Z ഛ 16͒ and propose a model-based parametrization of the field applicable for ion velocities above about v L = 1 2 Zv 0 (the L-shell electron velocity). The data and the parametrization are presented in Sec.…”

Section: Introductionmentioning

confidence: 99%

Transient-field strengths for high-velocity light ions and applications tog-factor measurements on fast exotic beams

Stuchbery

¹

2004

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The experimental data concerning transient-field strengths for ions with 6 ഛ Z ഛ 16 moving in Fe and Gd hosts are summarized for ion velocities greater than 1 2 Zv 0. Based on model expectations, a parametrization of the field strength is proposed. For both Fe and Gd hosts the form is B tf ͑v , Z͒ = AZ P ͑v / Zv 0 ͒ 2 e −͑v / Zv 0 ͒ 4 /2 , where A and P are determined by fitting data. The implications of the parameter values for understanding the physics of the transient field are discussed along with applications to the measurement of excited-state g factors in exotic nuclei produced by intermediate-energy fragmentation reactions.

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“…However, the point groups belonging to LiD, SrD 2 and NaD do not allow for this. Transient magnetic fields can cause an alignment of the projectile nucleus relative to the interior magnetic field of ferromagnetic target materials [14,15]. Despite unfulfilled requisites, this still not fully understood phenomenon could be considered.…”

Section: Theoretical Considerations and Discussionmentioning

confidence: 99%

Evidence for a host-material dependence of the n/p branching ratio of low-energy d+d reactions within metallic environments

Huke

¹

,

Czerski

²

,

Dorsch

³

et al. 2006

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Abstract. Angular distributions and the neutron-proton branching ratio of the mirror reactions 2 H(d, p) 3 H and 2 H(d, n) 3 He have been investigated using different self-implanted deuterized metallic targets at projectile energies between 5 and 60 keV. Whereas the experimental results obtained for the transition metals Zr, Pd, Ta and also Al do not differ from those known from gas-target experiments, an enhancement of the angular anisotropy in the neutron channel and an attenuation of the neutron-proton branching ratio have been observed for the (earth)alkaline metals Li, Sr and Na at deuteron energies below 20 keV. Experimental results are discussed with consideration of the special problems arising from the properties of these chemically very reactive target materials. A first theoretical effort explaining simultaneously both n/p asymmetry effects based on an induced polarization of the reacting deuterons within the crystal lattice is presented.

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Evidence for a host-material dependence of the n/p branching ratio of low-energy d+d reactions within metallic environments

Huke¹,

Czerski²,

Dorsch³

et al.

The 2nd International Conference on Nuclear Physics in Astrophysics

0

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Abstract. Angular distributions and the neutron-proton branching ratio of the mirror reactions 2 H(d, p) 3 H and 2 H(d, n) 3 He have been investigated using different self-implanted deuterized metallic targets at projectile energies between 5 and 60 keV. Whereas the experimental results obtained for the transition metals Zr, Pd, Ta and also Al do not differ from those known from gas-target experiments, an enhancement of the angular anisotropy in the neutron channel and an attenuation of the neutron-proton branching ratio have been observed for the (earth)alkaline metals Li, Sr and Na at deuteron energies below 20 keV. Experimental results are discussed with consideration of the special problems arising from the properties of these chemically very reactive target materials. A first theoretical effort explaining simultaneously both n/p asymmetry effects based on an induced polarization of the reacting deuterons within the crystal lattice is presented.

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Large transient magnetic fields of 28Si ions in backscattering through Fe at high velocities

Cited by 7 publications

References 15 publications

Transient-field strengths for high-velocity light ions and applications tog-factor measurements on fast exotic beams

Transient-field strengths for high-velocity light ions and applications tog-factor measurements on fast exotic beams

Evidence for a host-material dependence of the n/p branching ratio of low-energy d+d reactions within metallic environments

Evidence for a host-material dependence of the n/p branching ratio of low-energy d+d reactions within metallic environments

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