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Forty-eight transition probabilities for lines belonging to the 4p-ns (n=6,7,8,9) transition arrays of Ar(I) have been determined by means of emission-line-intensity measurements. The single-photon delayed-coincidence method has been used to obtain the lifetime values of the ns(3/2)2 (n=6,7,8,9) levels. With the taking into account of these lifetimes together with theoretical calculation in jK coupling for the lines beyond the experimental range, the relative transition probabilities were put on an absolute scale. The lifetime values obtained in the present work are original in the literature excepting the 7s (3/2)2-level lifetime. Four transition probabilities are also the first values found in the literature.Peer reviewe

physical review. a, general physics

Lifetimes of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ns</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mfrac><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:mfrac><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi /><mml:mn /><mml:mo>(</mml:mo><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>6</mml:mn><mml:mo>,</mml:mo><mml:mn>7</mml:mn><mml:mo>,</mml:mo><mml:mn>8…

Lifetimes ofns(32)2(n=6,7,8…