{"product_id":"laser-induced-multi-photon-excitations-in-thallium-von-riaz-muhammad","title":"Laser Induced Multi-photon Excitations in Thallium","description":"\u003cp\u003eIn 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.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783843354097\"\u003e\u003ch3\u003eAtomic Physics\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783843354097","offer_id":39497088401501,"sku":"9783843354097","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/691b2ffd-175d-426f-ad0b-de47651f900a.jpg?v=1757743248","url":"https:\/\/shop.autorenwelt.de\/products\/laser-induced-multi-photon-excitations-in-thallium-von-riaz-muhammad","provider":"Autorenwelt Shop","version":"1.0","type":"link"}