Corrigendum to “New REMPI observations and analyses for Rydberg and ion-pair states of HI” [J. Mol. Spectrosc. 290 (2013) 5–12]

High energy state interactions, energetics and multiphoto-fragmentation processes of HI

“…44 Instead we reassign a spectrum with a band origin of n 0 = 74 271 cm À1 , which has been assigned to the f 3 D 2 [3/2]7pp(v 0 = 0) state before, 44 to the F 1 D 2 [1/2]6pp (v 0 = 2) state with d = 3.59 in perfect agreement with the same value (d = 3.59) for both F 1 D 2 [1/2]6pp (v 0 = 0) and (v 0 = 1) states. 28,30,44 A gradual decrease in the B 0 values with v 0 for the vibrational states of F 1 D 2 [1/2] 6pp from 6.32 cm À1 (v 0 = 0) 28,44 to 6.13 cm À1 (v 0 = 1) 30,44 to 5.93 cm À1 (v 0 = 2), 44 as expected, further supports this reassignment.…”

“…The experimental apparatus and equipment parameters resembled that described in previous publications. [28][29][30][31] Mass resolved REMPI data for HI molecular beam were collected for the two-photon excitation region of 69 000-79 000 cm À1 . A molecular beam was created by jet expansion of a diluted gas mixture of HI in argon (HI : Ar B 1 : 2) through a 500 mm pulsed nozzle with a backing pressure of about 2.0-2.5 bar.…”

“…In this respect hydrogen iodide (HI), with its large iodine atom mass, is particularly interesting. A large number of Rydberg and ion-pair vibrational states (HI**) have been assigned and characterized both in absorption [21][22][23] and resonance enhanced multiphoton ionization (REMPI) [24][25][26][27][28][29][30] for the excitation energy region of about 66 000-75 000 cm À1 . Photofragmentation processes have been explored by mass resolved REMPI, [24][25][26][27][28][29][30] photoelectron spectra [31][32][33][34][35] and velocity map imaging (VMI) 36,37 studies.…”

“…In our previous work on mass resolved REMPI of the hydrogen halides (HCl, [38][39][40] HBr 38,41,42 and HI [28][29][30][31]43 ) we have observed and analysed a number of spectral perturbations which appear as spectra line shifts (LS-effect), line intensity irregularities (LI-effect) or line width variations (LW-effect). These effects have been interpreted to be due to state interactions between Rydberg and ion-pair states or between different Rydberg states.…”

“…31,38 While analyses of LI-effects have allowed estimates of interaction strengths 9,39,40 intensity anomalies (both LI-and LW-effects) have been mainly proved to be useful for qualitative identification of state interactions. [28][29][30][31]42,43 The nature and strength of excited state interactions and mixing determine intersystem crossing, which can further affect photofragmentation processes such as photodissociation and photoionization in multiphoton excitations. Therefore, mass resolved REMPI spectral analyses in association with state interaction analyses have been proved to be useful tools for interpreting photofragmentation processes.…”