Collective effects in the ionization of calcium atoms following resonant laser pumping of 4s4p3p1 metastable state

M. A. Khan; E. E. Khawaja; M. F. Al-Kuhaili

doi:10.1088/0022-3727/26/10/012

Collective effects in the ionization of calcium atoms following resonant laser pumping of 4s4p³p₁ metastable state

M. A. Khan, E. E. Khawaja, M. F. Al-Kuhaili

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12 Scopus citations

Abstract

The ionization of calcium atoms resonantly excited to the 4s4p³P₁ metastable state is investigated. In particular, the influence of various experimental parameters on the total ionization yield and the rate of its growth are reported. Maximum ionization yield was obtained with the buffer gas (Ar) pressure in the range 100-650 mbar. Furthermore, the time history of depopulation of the metastable state 4s4p³P₁ monitored in a ‘pump’ and ‘probe’ experiment using a second dye laser tuned to the 4s4p³P₁-4s5s³S₁, transition is presented. The effective lifetime of the 4s4p³P₁ state is shortened to 31 ± 2µs at 850°C and 800 mbar Ar pressure from the known value of about 350 µs.

Original language	English
Pages (from-to)	1614-1621
Number of pages	8
Journal	Journal of Physics D: Applied Physics
Volume	26
Issue number	10
DOIs	https://doi.org/10.1088/0022-3727/26/10/012
State	Published - 14 Oct 1993

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

Access to Document

10.1088/0022-3727/26/10/012

Cite this

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title = "Collective effects in the ionization of calcium atoms following resonant laser pumping of 4s4p3p1 metastable state",

abstract = "The ionization of calcium atoms resonantly excited to the 4s4p3P1 metastable state is investigated. In particular, the influence of various experimental parameters on the total ionization yield and the rate of its growth are reported. Maximum ionization yield was obtained with the buffer gas (Ar) pressure in the range 100-650 mbar. Furthermore, the time history of depopulation of the metastable state 4s4p3P1 monitored in a {\textquoteleft}pump{\textquoteright} and {\textquoteleft}probe{\textquoteright} experiment using a second dye laser tuned to the 4s4p3P1-4s5s3S1, transition is presented. The effective lifetime of the 4s4p3P1 state is shortened to 31 ± 2µs at 850°C and 800 mbar Ar pressure from the known value of about 350 µs.",

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T1 - Collective effects in the ionization of calcium atoms following resonant laser pumping of 4s4p3p1 metastable state

AU - Khan, M. A.

AU - Khawaja, E. E.

AU - Al-Kuhaili, M. F.

PY - 1993/10/14

Y1 - 1993/10/14

N2 - The ionization of calcium atoms resonantly excited to the 4s4p3P1 metastable state is investigated. In particular, the influence of various experimental parameters on the total ionization yield and the rate of its growth are reported. Maximum ionization yield was obtained with the buffer gas (Ar) pressure in the range 100-650 mbar. Furthermore, the time history of depopulation of the metastable state 4s4p3P1 monitored in a ‘pump’ and ‘probe’ experiment using a second dye laser tuned to the 4s4p3P1-4s5s3S1, transition is presented. The effective lifetime of the 4s4p3P1 state is shortened to 31 ± 2µs at 850°C and 800 mbar Ar pressure from the known value of about 350 µs.

AB - The ionization of calcium atoms resonantly excited to the 4s4p3P1 metastable state is investigated. In particular, the influence of various experimental parameters on the total ionization yield and the rate of its growth are reported. Maximum ionization yield was obtained with the buffer gas (Ar) pressure in the range 100-650 mbar. Furthermore, the time history of depopulation of the metastable state 4s4p3P1 monitored in a ‘pump’ and ‘probe’ experiment using a second dye laser tuned to the 4s4p3P1-4s5s3S1, transition is presented. The effective lifetime of the 4s4p3P1 state is shortened to 31 ± 2µs at 850°C and 800 mbar Ar pressure from the known value of about 350 µs.

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