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Berkowitz, J.; Chupka, W.A.; Kistiakowsky, G.B., Mass spectrometric study of the kinetics of nitrogen afterglow, J. Chem. Phys., 1956, 25, 457. [all data]
Chupka, W.A.; Inghram, M.G.; Porter, R.F., Dissociation energy of gaseous LaO, J. Chem. Phys., 1956, 24, 792. [all data]
Chupka, W.A.; Berkowitz, J.; Inghram, M.G., Thermodynamics of the Zr-ZrO, system: the dissociation energies of ZrO and ZrO2, J. Chem. Phys., 1957, 26, 1207. [all data]
Inghram, M.G.; Chupka, W.A.; Berkowitz, J., Thermodynamics of the Ta-O system: the dissociation energies of TaO and TaO2, J. Chem. Phys., 1957, 27, 569. [all data]
Berkowitz, J.; Chupka, W.A.; Blue, G.D.; Margrave, J.L., Mass spectrometric study of the sublimation of lithium oxide, J. Phys. Chem., 1959, 63, 644. [all data]
Chupka, W.A., Effect of unimolecular decay kinetics on the interpretation of appearance potentials, J. Chem. Phys., 1959, 30, 191. [all data]
Chupka, W.A.; Berkowitz, J.; Giese, C.F., Vaporization of beryllium oxide and its reaction with tungsten, J. Chem. Phys., 1959, 30, 827. [all data]
Meschi, D.J.; Chupka, W.A.; Berkowitz, J., Heterogeneous reactions studied by mass spectrometry. I. Reaction of B203(s) with H2O(g), J. Chem. Phys., 1960, 33, 530. [all data]
Berkowitz, J.; Tasman, H.A.; Chupka, W.A., Double-oven experiments with lithium halide vapors, J. Chem. Phys., 1962, 36, 2170. [all data]
Berkowitz, J.; Chupka, W.A., Vaporization processes involving sulfur, J. Chem. Phys., 1964, 40, 287. [all data]
Berkowitz, J.; Chupka, W.A., Equilibrium composition of selenium vapor; the thermodynamics of the vaporization of HgSe, CdSe, and SrSe, J. Chem. Phys., 1966, 45, 4289. [all data]
Berkowitz, J.; Chupka, W.A., Photoionization of high-temperature vapors. I. The iodides of sodium, magnesium, and thallium, J. Chem. Phys., 1966, 45, 1287. [all data]
Chupka, W.A.; Berkowitz, J., Photoionization of ethane, propane, and n-butane with mass analysis, J. Chem. Phys., 1967, 47, 2921. [all data]
Lifshitz, C.; Chupka, W.A., Photoionization of the CF3 free radical, J. Chem. Phys., 1967, 47, 3439. [all data]
Chupka, W.A., Mass-spectrometric study of the photoionization of methane, J. Chem. Phys., 1968, 48, 2337. [all data]
Chupka, W.A.; Berkowitz, J., Photoionization of the H2 molecule near threshold, J. Chem. Phys., 1968, 48, 5726. [all data]
Chupka, W.A.; Lifshitz, C., Photoionization of CH3+; heat of formation of CH2, J. Chem. Phys., 1968, 48, 1109. [all data]
Chupka, W.A.; Russell, M.E., Ion-molecule reactions of NH3+ by photoionization, J. Chem. Phys., 1968, 48, 1527. [all data]
Refaey, K.M.A.; Chupka, W.A., Photoionization of the lower aliphatic alcohols with mass analysis, J. Chem. Phys., 1968, 48, 5205. [all data]
Berkowitz, J.; Chupka, W.A.; Walter, T.A., Photoionization of HCN: the electron affinity and heat of formation of CN, J. Chem. Phys., 1969, 50, 1497. [all data]
Berkowitz, J.; Chupka, W.A., Photoionization of high-temperature vapors. VI. S2, Se2, and Te2, J. Chem. Phys., 1969, 50, 4245. [all data]
Chupka, W.A.; Berkowitz, J.; Refaey, K.M.A., Photoionization of ethylene with mass analysis, J. Chem. Phys., 1969, 50, 1938. [all data]
Chupka, W.A.; Berkowitz, J., High-resolution photoionization study of the H2 molecule near threshold, J. Chem. Phys., 1969, 51, 4244. [all data]
Walter, T.A.; Lifshitz, C.; Chupka, W.A.; Berkowitz, J., Mass-spectrometric study of the photoionization of C2F4 and CF4, J. Chem. Phys., 1969, 51, 3531. [all data]
Berkowitz, J.; Chupka, W.A.; Guyon, P.M.; Holloway, J.; Spohr, R., Photo-ionization studies of F2, HF, DF, and the xenon fluorides, Advan. Mass Spectrom., 1971, 5, 112. [all data]
Berkowitz, J.; Chupka, W.A.; Guyon, P.M.; Holloway, J.H.; Spohr, R., Photoionization mass spectrometric study of F2, HF, and DF, J. Chem. Phys., 1971, 54, 5165. [all data]
Berkowitz, J.; Chupka, W.A.; Guyon, P.M.; Holloway, J.H.; Spohr, R., Photoionization mass spectrometric study of XeF2, XeF4, and XeF6, J. Phys. Chem., 1971, 75, 1461. [all data]
Chupka, W.A.; Berkowitz, J., Photoionization of methane: ionization potential and proton affinity of CH4, J. Chem. Phys., 1971, 54, 4256. [all data]
Spohr, R.; Guyon, P.M.; Chupka, W.A.; Berkowitz, J., Threshold photoelectron detector for use in the vacuum ultraviolet, Rev. Sci. Instrum., 1971, 42, 1872. [all data]
Berkowitz, J.; Appelman, E.H.; Chupka, W.A., Photoionization of HOF with mass analysis, J. Chem. Phys., 1973, 58, 1950. [all data]
Berkowitz, J.; Dehmer, P.M.; Chupka, W.A., Photoionization mass spectrometry of F2O, J. Chem. Phys., 1973, 59, 925. [all data]
Killgoar, P.C., Jr.; Leroi, G.E.; Chupka, W.A.; Berkowitz, J., Photoionization study of NO2. I. The ionization potential, J. Chem. Phys., 1973, 59, 1370. [all data]
Dehmer, P.M.; Berkowitz, J.; Chupka, W.A., Photoization of atomic nitrogen, J. Chem. Phys., 1974, 60, 2676. [all data]
Guyon, P.M.; Chupka, W.A.; Berkowitz, J., Photoionization mass spectrometric study of formaldehyde H2CO, HDCO, and D2CO, J. Chem. Phys., 1976, 65, 1419. [all data]
Guyon, P.-M.; Spohr, R.; Chupka, W.A.; Berkowitz, J., Threshold photoelectron spectra of HF, DF, F2, J. Chem. Phys., 1976, 65, 1650. [all data]
Pratt, S.T.; Chupka, W.A., Photoionization study of the kinetics of unimolecular decomposition of halobenzene ions, Chem. Phys., 1981, 62, 153. [all data]
Seaver, M.; Chupka, W.A.; Colson, S.D.; Gauyacq, D., Double resonance multiphoton ionization studies of high Rydberg states in NO, J. Phys. Chem., 1983, 87, 2226. [all data]
Chupka, W.A.; Berkowitz, J.; Gutman, D., Electron Affinities of Halogen Diatomic Molecules as Determined by Endoergic Charge Exchange, J. Chem. Phys., 1971, 55, 6, 2724, https://doi.org/10.1063/1.1676487 . [all data]
Berkowitz, J.; Chupka, W.A.; Gutman, D., Electron Affinities of O2, O3, NO, NO2, and NO3 by Endothermic Charge Transfer, J. Chem. Phys., 1971, 55, 6, 2733, https://doi.org/10.1063/1.1676488 . [all data]
Chupka, W.A., Dissociation Energies of Some Gaseous Halide Complex Ions and the Hydrated Ion K(H2O)+, J. Chem. Phys., 1959, 40, 2, 458, https://doi.org/10.1063/1.1729974 . [all data]
Dehmer, P.M.; Dehmer, J.L.; Chupka, W.A., Effects of vibronic interaction and autoionization on the photoelectron spectrum of N2O, J. Chem. Phys., 1980, 73, 1, 126, https://doi.org/10.1063/1.439906 . [all data]
Miller, P.J.; Colson, S.D.; Chupka, W.A., Observation of the ν1+nν2 combination band in the C´ 1A1´ Rydberg state of NH3, Chem. Phys. Lett., 1988, 145, 3, 183, https://doi.org/10.1016/0009-2614(88)80175-1 . [all data]
Woodward, A.M.; Colson, S.D.; Chupka, W.A.; White, M.G., Vibrational analysis of the ~A-~X photodissociation spectrum of methyl iodide, J. Phys. Chem., 1986, 90, 2, 173, https://doi.org/10.1021/j100274a014 . [all data]
Berkowitz, J.; Chupka, W.A.; Inghram, M.G., Thermodynamics of the Ti-Ti2O3 system and the dissociation energy of TiO and TiO2, J. Phys. Chem., 1957, 61, 1569. [all data]
Chupka, W.A.; Berkowitz, J.; Giese, C.F.; Inghram, M.G., Thermodynamic studies of some gaseous metallic carbides, J. Phys. Chem., 1958, 62, 611. [all data]
Chupka, W.A.; Berkowitz, J.; Giese, C.F., Vaporization of beryllium oxide and its reaction with tungsten, J. Chem. Phys., 1959, 30, 827-834. [all data]
Chupka, W.A.; Russell, M.E., Photoionization study of ion-molecule reactions in mixtures of hydrogen and rare gases, J. Chem. Phys., 1968, 49, 5426. [all data]
Berkowitz, J.; Chupka, W.A., Diatomic ions of noble gas fluorides, Chem. Phys. Lett., 1970, 7, 447. [all data]
Killgoar, P.C., Jr.; Leroi, G.E.; Berkowitz, J.; Chupka, W.A., Photoionization mass spectrometric study of NO. A closer look at the threshold region, J. Chem. Phys., 1973, 58, 803. [all data]
Chupka, W.A.; Dehmer, P.M.; Jivery, W.T., High resolution photoionization study of ion-pair formation in H2, HD, and D2, J. Chem. Phys., 1975, 63, 3929. [all data]
Dehmer, P.M.; Chupka, W.A., High resolution study of photoionization processes in O2, J. Chem. Phys., 1975, 62, 4525. [all data]
Dehmer, P.M.; Chupka, W.A., Very high resolution study of photoabsorption, photoionization, and predissociation in H2+, J. Chem. Phys., 1976, 65, 2243-2273. [all data]
Guyon, P.-M.; Spohr, R.; Chupka, W.A.; Berkowitz, J., Threshold photoelectron spectra of HF, DF, and F2, J. Chem. Phys., 1976, 65, 1650-1658. [all data]
Whitte, M.G.; Seaver, M.; Chupka, W.A.; Colson, S.D., Observation of Rydberg (C2Π)-valence(B2Π) interactions in NO by multiphoton photoelectron spectroscopy, Phys. Rev. Lett., 1982, 49, 28-31. [all data]
Cheung, W.Y.; Chupka, W.A.; Colson, S.D.; Gauyacq, D.; Avouris, P.; Wynne, J.J., Rydberg-Rydberg transitions of NO using an optical-optical double resonance multiphoton ionization technique, J. Chem. Phys., 1983, 78, 3625-3634. [all data]
Dehmer, P.M.; Chupka, W.A., Photoabsorption and photoionization of HD, J. Chem. Phys., 1983, 79, 1569-1580. [all data]
Seaver, M.; Chupka, W.A.; Colson, S.D.; Gauyacq, D., Double resonance multiphoton ionization studies of high Rydberg states in NO, J. Phys. Chem., 1983, 87, 2226-2231. [all data]
Dehmer, P.M.; Miller, P.J.; Chupka, W.A., Photoionization of N2 X1Σg+, v" = 0 and 1 near threshold. Preionization of the Worley-Jenkins Rydberg series, J. Chem. Phys., 1984, 80, 1030-1038. [all data]
White, M.G.; Chupka, W.A.; Seaver, M.; Woodward, A.; Colson, S.D., Resonant multiphoton ionization of NO via the A2Σ+ state: photoelectron spectra and angular distributions, J. Chem. Phys., 1984, 80, 678-686. [all data]
Chen, P.; Chupka, W.A.; Colson, S.D., Multiphoton spectroscopy and analysis of the E2Π ← X2Πr band of CH, Chem. Phys. Lett., 1985, 121, 405-407. [all data]
Eyler, E.E.; Chupka, W.A.; Colson, S.D.; Biernacki, D.T., Autoionization of the 4f Rydberg state of the NO molecule, Chem. Phys. Lett., 1985, 119, 177-181. [all data]
Miller, P.J.; Chen, P.; Chupka, W.A., High-resolution one-photon ionization spectrum of NO using third-harmonic generation, Chem. Phys. Lett., 1985, 120, 217-222. [all data]
Lefebvre-Brion, H.; Dehmer, P.M.; Chupka, W.A., Vibrational effects in the spin-orbit autoionization of HBr, J. Chem. Phys., 1986, 85, 45-50. [all data]
Pallix, J.B.; Chen, P.; Chupka, W.A.; Colson, S.D., Photoelectron spectroscopy of the excited states of the CH radical, J. Chem. Phys., 1986, 84, 5208-5209. [all data]
Sur, A.; Ramana, C.V.; Chupka, W.A.; Colson, S.D., Rydberg-valence interactions in the Πg states of O2, J. Chem. Phys., 1986, 84, 69-72. [all data]
Chen, P.; Pallix, J.B.; Chupka, W.A.; Colson, S.D., Resonant multiphoton ionization spectrum and electronic structure of CH radical. New states and assignments above 50 000 cm-1, J. Chem. Phys., 1987, 86, 516-520. [all data]
Chupka, W.A., Photoionization of molecular Rydberg states: H2, C1Πu and its doubly excited states, J. Chem. Phys., 1987, 87, 1488-1498. [all data]
Li, L.; Lipert, R.J.; Park, H.; Chupka, W.A.; Colson, S.D., Dynamics and spectroscopic manifestations of two-photon bound-bound absorption through a repulsive intermediate state, J. Chem. Phys., 1987, 87, 6767-6769. [all data]
Hardis, J.E.; Ferrett, T.A.; Southworth, S.H.; Parr, A.C.; Roy, P.; Dehmer, J.L.; Dehmer, P.M.; Chupka, W.A., Autoionization dynamics in the valence-shell photoionization spectrum of CO, J. Chem. Phys., 1988, 89, 812-819. [all data]
Lefebvre-Brion, H.; Dehmer, P.M.; Chupka, W.A., Spin-orbit and electronic autoionization in HCl, J. Chem. Phys., 1988, 88, 811-817. [all data]
Li, L.; Lipert, R.J.; Park, H.; Chupka, W.A.; Colson, S.D., Spectroscopy and photophysics of 1Πg and 3Πg Rydberg, ion-pair states of Cl2 revealed by multiphoton ionization, J. Chem. Phys., 1988, 88, 4608-4613. [all data]
Miller, P.J.; Chupka, W.A.; Winniczek, J.; White, M.G., Shape resonance influence on the photoelectron angular distributions from O2 C3Πg, v = 0-3, J. Chem. Phys., 1988, 89, 4058-4061. [all data]
Miller, P.J.; Li, L.; Chupka, W.A.; Colson, S.D., Observation of strong Rydberg-valence mixing in the E3Σu- state of O2 by 3+1 MPI photoelectron spectroscopy, J. Chem. Phys., 1988, 88, 2972-2975. [all data]
Miller, P.J.; Li, L.; Chupka, W.A.; Colson, S.D., Shape resonance and non-Franck-Condon behavior in the photoelectron spectra of O2 produced by (2+1) multiphoton ionization via 3sσ Rydberg states, J. Chem. Phys., 1988, 89, 3921-3922. [all data]
Park, H.; Miller, P.J.; Chupka, W.A.; Colson, S.D., Production of vibrationally state-selected O2+ via newly discovered 4s-3d and 5s-4d Rydberg states of O2, J. Chem. Phys., 1988, 89, 3919-3921. [all data]
Park, H.; Miller, P.J.; Chupka, W.A.; Colson, S.D., Multiphoton optical and photoelectron spectroscopy of 4s-3d and 5s-4d Rydberg complexes of O2, J. Chem. Phys., 1988, 89, 6676-6686. [all data]
Li, L.; Chupka, W.A.; Pratt, S.T., Anomalous line shapes in delayed optical-optical double resonance studies of N2, J. Chem. Phys., 1989, 90, 606-608. [all data]
Miller, R.J.; Li, L.; Wang, Y.; Chupka, W.A.; Colson, S.D., Multiphoton ionization studies of NO: spontaneous decay channels in the (4pπ)K2Π(v = 2) Rydberg state, J. Chem. Phys., 1989, 90, 754-761. [all data]
Park, H.; Li, L.; Chupka, W.A., Observation and analysis of the 3dπ1Σg+ Rydberg state of O2 by (2+1) multiphoton ionization, Chem. Phys. Lett., 1989, 162, 317-320. [all data]
Gauyacq, D.; Roche, A.L.; Seaver, M.; Colson, S.D.; Chupka, W.A., s and d Rydberg complexes of NO probed by double-resonance multiphoton ionisation in the region n* = 5 to n* = 25; multichannel quantum defect analysis. Part II, Mol. Phys., 1990, 71, 1311-1331. [all data]
Park, H.; Li, L.; Chupka, W.A.; Lefebvre-Brion, H., Two-photon spectroscopy of the 3d Rydberg states of O2: 1Φg and 3Φg states, J. Chem. Phys., 1990, 92, 5835-5840. [all data]
Park, H.; Li, L.; Chupka, W.A., Identification of the 3dπ 1Δg and 3Δ2g Rydberg state of O2 by multiphoton ionization and polarization studies, J. Chem. Phys., 1990, 92, 61-64. [all data]
de Beer, E.; Koopmans, M.P.; de Lange, C.A.; Wang, Y.; Chupka, W.A., (2+1) resonance-enhanced multiphoton ionization-photoelectron spectroscopy of the OH radical, J. Chem. Phys., 1991, 94, 7634-7639. [all data]
Wang, Y.; Li, L.; Chupka, W.A., Rotationally resolved photofragmentation spectroscopy of CH+ formed by resonance-enhanced multiphoton ionization, Chem. Phys. Lett., 1991, 185, 478-482. [all data]
Berkowitz, J.; Chupka, W.A., J. Chem. Phys., 1967, 47, 4320. [all data]