Riaz Muhammad

Laser Induced Multi-photon Excitations in Thallium

Atomic Physics

• Broschiertes Buch

Produktbeschreibung

In the present work, we present extensive new data on thallium employing multi-photon and multi-step excitation techniques in conjunction with a thermionic diode ion detector. A number of different excitation paths have been used. The first experiment addresses the observation of odd- parity levels np 2P1/2,3/2 and np 2F5/2 using two- photon excitation from the ground state. In the second set of experiments we employed a two-step excitation scheme using 6s2 7s 2S1/2 intermediate level and observed the np 2P1/2,3/2 levels upto n = 56. The even-parity levels have also been excited using three-photon excitation from the ground state revealing ns 2S1/2 and np 2P3/2,5/2 levels. In the subsequent experiments, we used a two-color three- photon excitation technique to approach the ns 2S1/2 and nd 2D3/2 levels using 7p 2P1/2 as an intermediate level. The nd series have been extended upto n = 65 and it is noticed that the intensity of the high Rydberg series scales as 1/n2.8. However, the np 2P1/2,3/2 series, which have been observed upto n = 56 scale as 1/n2.3 in contrast to the scaling law of 1/n3 for an unperturbed Rydberg series.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 104
• Erscheinungstermin: 2. November 2010
• Englisch
• Abmessung: 220mm x 150mm x 7mm
• Gewicht: 173g
• ISBN-13: 9783843354097
• ISBN-10: 384335409X
• Artikelnr.: 32311094

Autorenporträt

Recently, I worked on loss mechanisms in trapped samples as a part of my Post Doctoral research on under a research project of FAPESP-Brazil at the Intituto de Fisica de Sao Carlos. Presently I am teaching at the Department of Applied Physics, Federal Urdu University of Arts, Science and Technology, Islamabad, Pakistan