High resolution resonance ionization spectroscopy of stable titanium isotopes ( 46-50 Ti) using an injection-locked Ti:Sapphire laser system was developed. Five peaks corresponding to the isotopes 46-50 Ti were clearly resolved in the spectra with a line-width of 160 MHz. Isotope shifts of the 365.4537 nm transition were measured.

A sequential data correction method using several experimental parameters of pulsed resonance ionization mass spectrometry was developed to reduce mass discrimination effects for isotope ratio analysis as well as fluctuations in the ion count rate. This correction method was applied to isotope ratio determination of stable titanium isotopes using a two-step, single color ionization scheme. A significant improvement of the precision of the measured isotopic ratio of stable titanium isotopes was demonstrated after correction with a parameter set consisting of laser power, atmospheric pressure, and laser frequency.

Abstract.We have proposed an advanced technique to measure the 93m Nb yield precisely by Resonance Ionization Mass Spectrometry, instead of conventional characteristic X-ray spectroscopy. 93m Nb-selective resonance ionization is achievable by distinguishing the hyperfine splitting of the atomic energy levels between 93 Nb and 93m Nb at high resolution. In advance of 93m Nb detection, we could successfully demonstrate high resolution resonant ionization spectroscopy of stable 93 Nb using an all solid-state, narrowband and tunable Ti:Sapphire laser system operated at 1 kHz repetition rate.