Collinear fast-beam laser

As mentioned above, the radon and radium sequences have been investigated by collinear fast-beam laser spectroscopy, whereas in francium all three atomic-beam methods, ABMR, atomic-beam laser spectroscopy and collinear laser spectroscopy, have contributed. 

Fig. 5.47. Simplified scheme of the experimental set-up for detector of Sr by collinear fast beam laser excitation and resonance ionization detection.

The combination of collinear fast-beam laser spectroscopy and P-RADOP (radiation-detected optical pumping) has been used to measure nuclear spins and moments of neutron-rich isotopes of the light alkali elements jLi [72-74] and Na [75]. Here, the optically pumped fast atomic beam is implanted into a single crystal placed in a static magnetic field. The NMR signal is destroying the nuclear polarization detected by measuring the p-decay asymmetry. 

With laser beams, the effect can be observed in absorption. This is the basis for collinear fast-beam laser spectroscopy. Among the Doppler-free techniques (described in Part A, Chapter 15 by W. Demtroder) it is the only one using linear absorption without velocity selection as in collimated atomic beams. 

Table 1. Measurements on Radioactive Nuclides by Collinear Fast-Beam Laser Spectroscopy... 

Figure 10. Essential components of the ISOLDE setup for collinear fast-beam laser spectroscopy. The postacceleration and scanning...

Collinear Fast Beam-Laser Spectroscopy on 5d c/o Barium... 

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