Abstract We report a new method for detecting highly excited ions. With a strong constant electric field ionization following the extracting of ions by a pulsed electric field in a time-of-flight mass spectrometer, the direct multi-photon ionization background can be eliminated in laser multi-step resonance ionization mass spectroscopy of ionic Rydberg states. A high detection efficiency call be obtained for law members of ionic Rydberg states by use of this method. We have applied the method in the study of the spectroscopy of ionic Rydberg states ia ytterbium.
Received: 25 March 1995
Revised: 15 November 1995
Accepted manuscript online:
PACS:
32.80.Rm
(Multiphoton ionization and excitation to highly excited states)
(Atomic masses, mass spectra, abundances, and isotopes)
Fund: Project supported by the National Natural Science Foundation of China.
Cite this article:
HUANG WEN (黄雯), XU XIANG-YUAN (许祥源) A NEW EXPERIMENTAL METHOD IN THE STUDY OF IONIC RYDBERG STATES BY RESONANCE IONIZATION MASS SPECTROSCOPY 1996 Acta Physica Sinica (Overseas Edition) 5 493
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