Transient field measurements on 40Ar ions in Gd at the 1s electron Bohr velocity and the g-factor of the 2+ state at 1.461 MeV

Cub, J.; Knopp, U.; Speidel, K.‐H.; Büsch, H.; Kremeyer, S.; Wollersheim, H. J.; Martin, N. L. S.; Hong, Xiang; Vetter, K.; Gollwitzer, N.; Levon, A. I.; Booten, A.

doi:10.1016/0375-9474(92)90045-l

Cited by 13 publications

(7 citation statements)

References 10 publications

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“…This is seen by the spectrum shown in Fig. 1 which has been corrected for the large Dopplershift by using the position information of the ion detector (see also [8,12]). It is noted that no contaminant lines were observed in the energy region of interest.…”

Section: Methodsmentioning

confidence: 96%

“…This is still valid in view of beaminduced perturbations of ferromagnetism as the specific energy loss of the beam ions in Gd is with (dE/ dx)~4 MeV/gm small enough that no attenuation of the TF is expected [7]. In addition, this information enabled to calibrate the TF for Ar ions at similar velocities in order to determine the g-factor of the first 2 § in 4~ at 1.461 MeV [8].…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Transient field measurements on32S(21 +) ions in Gd at the 1s electron Bohr velocity

Cub

Bussas

Speidel

et al. 1993

Z. Physik A - Hadrons and Nuclei

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Abstract.With the known g-factor of the Coulomb excited first 2+-state in 32S the transient magnetic fietd was determined for sulphur ions traversing Gd at a mean velocity of 16v0 (Vo=C/137). The degree of polarization deduced for the dominating H-like ions, /51~=0.10(3 ), agrees very well with that obtained at lower velocities. In addition, an upper limit of a transient electric field gradient was deduced from the particle-y-angular correlation which is expected on theoretical grounds.

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Section: Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 95%

Transient field measurements on32S(21 +) ions in Gd at the 1s electron Bohr velocity

Cub

Bussas

Speidel

et al. 1993

Z. Physik A - Hadrons and Nuclei

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“…The only previous radioactive beam measurement by this method, on 38 S and 40 S, was performed at NSCL [12,13]. Similar measurements on stable beams include studies on high velocity 32 S, 40 Ar, and 52 Cr [21][22][23][24]. Figure 1 shows a sketch of the experimental setup.…”

Section: Experimental Designmentioning

confidence: 99%

“…[16] and supplemented by more recent studies on 24 Mg [34], gives experimental transient-field strengths for ions between 12 C and 52 Cr traversing gadolinium hosts with velocities near Zv 0 . These data have been used with the present results, and Eq.…”

Section: Transient Field Calibration and K -Shell Polarizationmentioning

confidence: 99%

Firstg(2+)measurement on neutron-rich72Zn, and the high-velocity transient field technique for radioactive heavy-ion beams

Fiori¹,

Георгиев²,

Stuchbery³

et al. 2012

Phys. Rev. C

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The high-velocity transient-field (HVTF) technique was used to measure the g factor of the 2 + state of 72 Zn produced as a radioactive beam. The transient-field strength was probed at high velocity in ferromagnetic iron and gadolinium hosts using 76 Ge beams. The potential of the HVTF method is demonstrated and the difficulties that need to be overcome for a reliable use of the TF technique with high-Z, high-velocity radioactive beams are revealed. The polarization of K-shell vacancies at high velocity, which shows more than an order of magnitude difference between Z = 20 and Z = 30 is discussed. The g-factor measurement hints at the theoretically predicted transition in the structure of the Zn isotopes near N = 40.

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“…The advantages of inverse kinematics over conventional kinematics for IMPAC measurements include (i) the improved sensitivity achieved by virtue of the forward-focusing of the reaction products in the laboratory frame (the particle detector therefore can cover a larger solid angle in the centre-of-mass frame), and (ii) the applicability of inverse kinematics to experiments on exotic nuclei produced as radioactive beams, which open up new regimes for nuclear structure studies [12,13,14,15]. A third alternative for the reaction is to excite the beam ions in glancing collisions on heavier target nuclei [16,17,18,19,20,21]. Further discussion of conventional versus inverse kinematics measurements may be found in the reviews of Speidel et al [3] and Benczer-Koller and Kumbartzki [4].…”

Section: Precessionsmentioning

confidence: 99%

Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation

Stuchbery

Harding

Weisser

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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The design and operation of apparatus for measurements of in-beam hyperfine interactions and nuclear excited-state g factors is described. This apparatus enables a magnetic field of about 0.1 tesla to be applied to the target and the target temperature to be set between ∼ 4 K and room temperature. Design concepts are developed mainly in terms of transient-field g-factor measurements following Coulomb excitation by the implantation perturbed angular correlation (IMPAC) technique. The formalism for perturbed angular correlations is outlined and a figure of merit for optimizing these measurements is derived to inform design. Particle detection is based on the use of silicon photodiodes of rectangular shape. The particle-γ angular correlation formalism for this case is described. The experimental program to date includes temperature-dependent studies of hyperfine fields, transient-field g-factor measurements, and time-dependent perturbed angular distribution (TDPAD) studies.

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Transient field measurements on 40Ar ions in Gd at the 1s electron Bohr velocity and the g-factor of the 2+ state at 1.461 MeV

Cited by 13 publications

References 10 publications

Transient field measurements on32S(21 +) ions in Gd at the 1s electron Bohr velocity

Transient field measurements on32S(21 +) ions in Gd at the 1s electron Bohr velocity

Firstg(2+)measurement on neutron-rich72Zn, and the high-velocity transient field technique for radioactive heavy-ion beams

Apparatus for in-beam hyperfine interactions and g-factor measurements: Design and operation

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