Journal
PHYSICAL REVIEW A
Volume 62, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.62.020702
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The absolute photoionization cross sections of I+ and I2+ ions have been measured from 45 to 140 eV, covering the region of 4d ionization where a large maximum, also known as a giant resonance, occurs in the cross section. For both ions, the maximum cross section appears near 90 eV and is measured to be 23(3) Mb and 24(4) Mb, respectively. This is significantly larger than that previously reported for atomic iodine, and only slightly smaller than the values calculated using the random-phase approximation with exchange.
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