Quantum beat measurements on spin-polarized electrons in oxygen ions emerging from magnetized Ni- andGd-layers

Hyperfine interaction studies on swift O-ions emerging with polarized electrons from ferromagnetic layers into vacuum

“…This deficit in the polarization has been attributed to depolarizations by nonmagnetic surface layers (e.g. oxydation) which is supported by preliminary results from similar measurements using Ni and Gd as exit layers [10].…”

“…As discussed in [9] layers of -~ 1 gg/cm 2 thickness would be sufficient to reduce the polarization to the observed values. Due to this problem the large polarization observed for O-ions inside Gd of ply= (1) a [9] including new data, b [6,10] 0.24(1) could not be maintained on emergence into vacuum. Despite this observation the present results support the general idea that the polarizations detected in the present measurements and those associated with the very intense TF have the same origin.…”

On the ion beam stopping power dependence of transient magnetic fields in Fe- and Gd-hosts

“…This electron orbital dependence [14] of the ion-beam induced attenuations could also be an artefact in the sense that (2) (which has been used for the quantification of the attenuation) is not an overall adequate description of TF data bearing in mind that higher electron orbitals refer to lower ion velocities and the degree of polarization might be different as well. An orbital dependence of the degree of polarization was found only recently in measurements on 160-ions for which the 2s-electron polarization turned out to be twice as large as for the is-electrons [15,16]. It should be noted that the electron orbital dependence of the attenuations was earlier discussed in just this context [14].…”

Orientation of 1s electrons using tilted foils

“…Beams of oriented † ions have numerous applications in atomic physics experiments, including measurements of atomic structure and studies of collisions with atoms or electrons [1,2]. Many different methods are employed for producing beams of oriented ions, such as direct optical pumping [3], scattering off of magnetic surfaces [4], transmission through magnetic layers [5,6], charge exchange in spin-polarized targets [7][8][9][10][11][12][13][14], transmission through tilted foils [15][16][17][18][19][20], scattering from inclined surfaces [21][22][23][24] and use of multitilted foils or surfaces [21,[25][26][27][28][29][30][31]. Of these the least expensive and most universally applicable are the methods involving tilted foils and surfaces [32].…”