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Liu J, Salumbides EJ, Hollenstein U, Koelemeij JCJ, Eikema KSE, Ubachs W, Merkt F. Determination of the ionization and dissociation energies of the hydrogen molecule. J Chem Phys 2009; 130:174306. [DOI: 10.1063/1.3120443] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Dinu L, Picard YJ, van der Zande WJ. Predissociation and autoionization of triplet Rydberg states in molecular hydrogen. J Chem Phys 2004; 121:3058-68. [PMID: 15291615 DOI: 10.1063/1.1773157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
We present single-photon spectroscopy in molecular hydrogen starting from the metastable c3Piu- state to a number of triplet nd-Rydberg states (v = 0 - 4, n = 12 - 20). Using fast beam spectroscopy both the autoionization channel and the predissociation channel are quantified, field free, as well as with small electric fields. Coupling with the i3Pig state is assumed to be responsible for field-free predissociation of the v = 0 Rydberg levels. The stronger observed predissociation channel of the v = 1 Rydberg levels is due to the nonadiabatic interaction with the h3Sigmag+ state in combination with l mixing due to an external electric field. No direct evidence is found for possible electric field induced predissociation of the gerade Rydberg states by low lying ungerade states. The competition between autoionization and predissociation is discussed in terms of possible consequences for dissociative recombination involving low energy electron collisions with the H2+ molecular ion.
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Affiliation(s)
- Laura Dinu
- FOM--Institute for Atomic and Molecular Physics (AMOLF), Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
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Kay JJ, Byun DS, Clevenger JO, Jiang X, Petrović VS, Seiler R, Barchi JR, Merer AJ, Field RW. "Spectrum-only" assignment of core-penetrating and core-nonpenetrating Rydberg states of calcium monofluoride. CAN J CHEM 2004. [DOI: 10.1139/v04-071] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Rydberg states of calcium monofluoride in the n* = 1720 region have been observed by ionization-detected opticaloptical double-resonance spectroscopy via the D2Σ+ v = 1 intermediate state. All members of the six core-penetrating Rydberg series in the n* = 1720 region and several components of the 17f and 17g core-nonpenetrating Rydberg states have been assigned. While the assignment of core-penetrating Rydberg states is straightforward without use of an effective Hamiltonian model, "spectrum-only" assignment of core-nonpenetrating states is complicated because strong l-uncoupling causes the core-nonpenetrating states to evolve rapidly from Hund's case (b) to Hund's case (d) coupling. We describe "spectrum-only" assignment procedures, developed in the spirit of Gerhard Herzberg, that can be used to assign opticaloptical double-resonance spectra of core-penetrating and core-nonpenetrating Rydberg states using only information contained in the spectrum rather than predictions derived from an effective Hamiltonian model. The ambiguities that arise in the assignment of each class of states are discussed in detail.Key words: CaF, electric quadrupole moment, Rydberg states, laser spectroscopy.
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Kim SH, Mazur E. Rydberg states of HD. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:992-1004. [PMID: 9912339 DOI: 10.1103/physreva.52.992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Stephens JA, McKoy V. Studies of molecular Rydberg states by Schwinger variational‐quantum defect methods: Application to molecular hydrogen. J Chem Phys 1992. [DOI: 10.1063/1.463428] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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McCormack EF, Pratt ST, Dehmer JL, Dehmer PM. Analysis of the 8f, 9f, and 10f, v=1 Rydberg states of N2. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:3007-3015. [PMID: 9906301 DOI: 10.1103/physreva.44.3007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Davies PB, Guest MA, Stickland RJ. Infrared laser spectroscopy of H2and D2Rydberg states. I. Application of the polarization model. J Chem Phys 1990. [DOI: 10.1063/1.459664] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lindsay MD, Kam AW, Lawall JR, Zhao P, Pipkin FM, Eyler EE. Autoionization rates and energy levels of triplet nf, v=1 Rydberg states of H2. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:4974-4988. [PMID: 9903722 DOI: 10.1103/physreva.41.4974] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lembo LJ, Bjerre N, Huestis DL, Helm H. Spectroscopic study of the second 3Πg state of H2 : A bound triplet state perturbed by a doubly excited state. J Chem Phys 1990. [DOI: 10.1063/1.458014] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jungen C, Dabrowski I, Herzberg G, Kendall DJW. High orbital angular momentum states in H2 and D2. II. The 6h–5g and 6g–5f transitions. J Chem Phys 1989. [DOI: 10.1063/1.456824] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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McCormack E, Gilligan JM, Cornaggia C, Eyler EE. Measurement of high Rydberg states and the ionization potential of H2. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:2260-2263. [PMID: 9901490 DOI: 10.1103/physreva.39.2260] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Sturrus WG, Hessels EA, Arcuni PW, Lundeen SR. Laser spectroscopy of ( nu =0,R. PHYSICAL REVIEW. A, GENERAL PHYSICS 1988; 38:135-151. [PMID: 9900147 DOI: 10.1103/physreva.38.135] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bjerre N, Keiding SR, Lembo LJ, Helm H. Autoionization of H2 induced by a doubly excited triplet state. PHYSICAL REVIEW LETTERS 1988; 60:2465-2468. [PMID: 10038361 DOI: 10.1103/physrevlett.60.2465] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Davies PB, Guest MA, Johnson SA. Infrared laser spectroscopy of the a 3Σ+g–c 3Πu system of H2 and D2. J Chem Phys 1988. [DOI: 10.1063/1.453980] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Eyler EE, Gilligan J, McCormack E, Nussenzweig A, Pollack E. Precise two-photon spectroscopy of E intervals in H2. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 36:3486-3489. [PMID: 9899278 DOI: 10.1103/physreva.36.3486] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Glab WL, Hessler JP. Multiphoton excitation of high singlet np Rydberg states of molecular hydrogen: Spectroscopy and dynamics. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 35:2102-2110. [PMID: 9898385 DOI: 10.1103/physreva.35.2102] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Keiding S, Bjerre N, Helm H. The n=2,3 triplet Rydberg states of the HD molecule observed by fast neutral‐beam photofragment spectroscopy. J Chem Phys 1987. [DOI: 10.1063/1.452010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sturrus WG, Hessels EA, Lundeen SR. High-resolution microwave spectroscopy of the 10G-10H Rydberg transition in H2. PHYSICAL REVIEW LETTERS 1986; 57:1863-1866. [PMID: 10033569 DOI: 10.1103/physrevlett.57.1863] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Eyler EE. Autoionization of nonpenetrating Rydberg states in diatomic molecules. PHYSICAL REVIEW. A, GENERAL PHYSICS 1986; 34:2881-2888. [PMID: 9897606 DOI: 10.1103/physreva.34.2881] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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