[en] Blume's formula for the time differential attenuation coefficients for the hyperfine perturbation of ions recoiling in gas is rewritten in a form convenient for numerical solution when the number of precession frequencies is large. Asymptotic expressions for the behaviour of the solutions for very short, and very long correlation time are given. Approximate condition for the existence of a minimum in the pressure dependence of the time differential coefficients, as well as the position and depth of such a minimum, are also der+ved, and compared with the results of calculations for various physical systems. (author)

[en] A rotation of the angular correlation of de-excitation γ-rays from ⁴⁰Ca and ⁴⁴Ca was observed in a tilted foil geometry. The signs and magnitudes of the magnetic moments of the 2₁⁺ of ⁴⁴Ca and of the 3₁^- level of ⁴⁰Ca were determined to be g = -0.28+-0.11 and g = +0.52+-0.18, respectively. This experiment provides further information regarding the polarization of deeply bound electronic configurations produced by a surface-interaction mechanism and demonstrates the feasibility of the present technique for measuring signs and magnitudes of magnetic moments of picosecond nuclear levels. (author)

[en] A spin rotation type modification of a gamma angular distribution pattern has been observed in gamma rays emitted from ¹⁶O nuclei recoiling from a target tilted to the direction of recoil (which is also the beam direction and the symmetry axis). The spin rotation is ascribed to the effect of hyperfine interactions with ionic states that are polarized when the ions emerge from the tilted foil. (author)

[en] An increasing number of atomic collisions in solids studies utilize experimental and theoretical techniques similar to those used in studies of two-body interactions involving ions, atoms, molecules, leptons and photons. Many inelastic processes involving solids may be simply understood in terms of microscopic quantum mechanical descriptions. To illustrate this, the authors describe measurements of elliptic polarization produced by both grazing incidence and tilted foil collision interactions arising from the decay of excited hydrogenic states. (Auth.)

[en] The nuclear tilted-foil experimental field has matured from the early time-integral measurements to the current multifoil time-differential precession and polarization configurations, leading to a wide range of measurements - magnetic moments, quadrupole moments and parity-non-conservation. The physical basis of these experiments is discussed and experimental results are reviewed. (Auth.)

[en] Blume's formula for the time-differential attenuation coefficients for the hyperfine perturbation of ions recoiling in gas is rewritten in a form convenient for numerical solution when the number of precession frequencies is large. Asymptotic expressions for the behaviour of the solutions for very short, and very long correlation time are given. Approximate condition for the existence of a minimum in the pressure dependence of the time differential coefficients, as well as the position and depth of such a minimum, are also derived, and compared with the results of calculations for various physical systems. (Auth.)

[en] A rotation of the angular correlation of decay y-rays from the 2⁺₁ levels of 148,150Sm and 146,148Nd for ions recoiling out of a tilted foil assembly at v/c approx. 0.01 has been observed. The results are interpreted in the framework of a model for a complex electronic ensemble, yielding a large polarization for these ions and demonstrating the possible use of this technique in future nuclear g-factor measurements. (orig.)

[en] The effect of atomic orientation produced in a tilted-foil geometry on the angular correlation of nuclear decay γ-rays is investigated. A quantum mechanical treatment is presented for the case of a known electronic ensemble. An approximate phenomenological approach is suggested for heavy ions recoilling out of the target with a multi-electron complex environment. The utilization of this approach in hyperfine interaction experiments is discussed. (orig.)

No abstract available

[en] The g factors of the 2₁⁺ states of even Sn nuclei have been measured using the dynamic magnetic field which acts on fast ions traversing thin magnetized iron foils. The results obtained are g=+0.37 +- 0.13, g> or approx. =0, g=-0.16 +- 0.10, g=+0.02 +- 0.09, g=-0.14 +- 0.07, g=-0.07 +- 0.11, and g=-0.15 +- 0.10 for ¹¹²¹²⁴Sn, respectively. The shell-model structure of the Sn isotopes is discussed