The new β-NMR facility at TRIUMF and applications in semiconductors

β-detected NMR of Li in Ga1−xMnxAs

“…Details of the polarizer and spectrometer can be found in Refs. [26,27]. The 8 Li + beam is decelerated from 28 keV to 8 keV immediately prior to implantation into the sample.…”

Perspectives for the VITO beam line at ISOLDE, CERN

“…At present there is only one dedicated beam line for laser-induced nuclear orientation, namely at TRIUMF, Canada [19]. Besides being a unique alternative for users across Europe, VITO will include unprecedented features, such the β-NMR chamber for experiments on liquid samples, and a UHV β-NMR set-up for studies of surfaces and interfaces.…”

The development of pure β-NQR techniques for measurements of nuclear ground state quadrupole moments in lithium isotopes

“…A non-resonant "transmission line" Helmholtz coil assembly [9] provides a Continuous Wave (CW) oscillating magnetic field. Scanning a suitable range of Radio Frequency (RF) frequencies, the β-decay asymmetry is observed in the left (L) and right (R) scintillator detectors shown in figure 2b.…”

“…Figure 3 shows the β-NQR spectra of 8,9 Li implanted into SrTiO 3 at a temperature of T = 295 K in a zero magnetic field. The two lines correspond to opposite helicities of the polarising laser light.…”

“…Charge radius measurements of 6,7,8,9,11 Li at Triumf-Isac showed that the Root Mean Square (RMS) charge radius of 11 Li is significantly larger than that of 9 Li (figure 1) [4]. This could be due to a larger static electric quadrupole deformation as suggested by the ratio of the Figure 1: RMS charge radii r c,RMS of Li.…”