Measurement of theg-factor of the 21 + state of192Pt in an external magnetic field

Abstract

The g-factor of the 2~ state of 192pt has been measured by the IPAC technique in an external magnetic field as: g(2 +, 192pt)= +0.287(17). An additional IPAC experiment with an ~92IrFe sample was performed with the same level in order to investigate the hyperfine field. The result: COLZ(2~-, ~92PtFe)=0.1115(9) gives the hyperfine field: B4?2K(PtFe)= 126-.8(71) T. The result of an LTNO experiment with the same level is compatible with the assumption that 100% of the 192Ir atoms were on unique sites.

Nuclear g factors and structure of high-spin isomers in 190,192,194Pt and 196,198Hg

“…[28,29], the result is g K=13/2 = −0.180 (5). For the present analysis we need the g K value for the 11/2 + [615] orbit.…”

“…A.I.Levon et al / Nuclear Physics A 764 (2006) [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] …”

g-factors of the ground state rotational band of158Dy

“…In spite of the limited energy resolution of the BaF2 detectors this can be done with sufficient accuracy by use of the directly measured Ey, -E~= coincidence matrices. Figure 2 shows as an example one out of the 66 coincidence matrices which are measured simultaneously for all two-detector combinations of the angular arrangement of twelve detectors [ 1,8]. A few favourable circumstances allow to derive the two g-factors with negligibly small systematic errors: a) g(2+): The 218-99keV correlation used for the measurement contains a weak disturbing Compton background of high energy lines under the 99 keV peak.…”

“…In the target holder, see [1], the Gd foil is mounted in an aluminium frame and cooled to 4 K by direct mechanical contact with the liquid helium capsule of the superconducting magnet. The magnet was powered to the maximum field of 4.5 T. In the geometry of our twelve detector apparatus [1,8] the direction of the magnetic field is parallel to the beam axis and therefore perpendicular to the surface of the foil. For a complete magnetization of the Gd foil the external field must be considerably larger than the saturation magnetization of Gd (Bsat(Gd)~2.5 T) in order to overcome the demagneti-zation field.…”

Calibration of the transient field for Pt ions in gadolinium and magnetic moments of the21+states inPt

“…These measurements resulted in g factors for the 2+& states in Pt of -0.3. Further evidence of the larger 2+i g factors arises from a recent transient field experiment on i92 is4 issPt recoiling in iron and gadolinium at Legnaro [15] and by a high precision integral perturbed angular correlation (IPAC) measurement using the static hyperfine field acting at 9 Pt in iron [16]. This latter measurement by Bodenstedt et aL resulted in a value for the static field in excellent agreement with that determined by Kontani and Itoh [17] and confirmed the reliability of the g-factor results for i9z is Pt of Katayama, Morinobu, and Ikegama [18] determined by radioactivity methods.…”