Two-color three-photon resonant excitation spectrum of strontium in the autoionization region |
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| Authors: | M Yaseen R Ali A Nadeem SA Bhatti MA Baig |
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| Institution: | (1) Atomic and Molecular Physics Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan, PK;(2) Applied Physics Division, PINSTECH, P.O. Box Nilore, Islamabad, Pakistan, PK |
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| Abstract: | We report new studies of the odd parity autoionizing Rydberg series of strontium attached to the 4d( 2
D
3/2, 5/2) ionic limits possessing J = 1-3 based on the two-color three photon resonant excitation technique in conjunction with an atomic beam apparatus. Using
the 4d
23
P
0 intermediate levels, we have been able to record the autoionizing Rydberg series of J = 1 whereas, from the 4d
23
P
2 intermediate level the series of Rydberg levels possessing J = 1, 2 and 3 have been observed. The level assignments and the line shapes simulations of the autoionizing resonances have
been made using the multichannel quantum defect theory.
Received 21 November 2001 / Received in final form 2 May 2002 Published online 19 July 2002 |
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| Keywords: | PACS 32 30 Jc Visible and ultraviolet spectra – 32 80 Rm Multiphoton ionization and excitation to highly excited states (e g Rydberg states) |
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