| Heats of formation of the acetyl radical and ion obtained by threshold photoelectron photoion coincidence EA Fogleman, H Koizumi, JP Kercher, B Sztáray, T Baer The Journal of Physical Chemistry A 108 (24), 5288-5294, 2004 | 69 | 2004 |
| The kinetic energy dependence of association reactions. A new thermokinetic method for large systems H Koizumi, PB Armentrout The Journal of chemical physics 119 (24), 12819-12829, 2003 | 52 | 2003 |
| Collision-Induced Dissociation and Theoretical Studies of Cu+−Dimethyl Ether Complexes H Koizumi, XG Zhang, PB Armentrout The Journal of Physical Chemistry A 105 (11), 2444-2452, 2001 | 48 | 2001 |
| Bond Dissociation Energies and Structures of CuNO+ and Cu(NO)2+ K Koszinowski, D Schröder, H Schwarz, MC Holthausen, J Sauer, ... Inorganic chemistry 41 (22), 5882-5890, 2002 | 46 | 2002 |
| Sequential bond energies of Ag+ (H2O) n and Ag+ (dimethyl ether) n, n= 1–4, determined by threshold collision-induced dissociation H Koizumi, M Larson, F Muntean, PB Armentrout International Journal of Mass Spectrometry 228 (2-3), 221-235, 2003 | 38 | 2003 |
| Collision-induced dissociation and theoretical studies of Cu+-dimethoxyethane complexes H Koizumi, PB Armentrout Journal of the American Society for Mass Spectrometry 12 (5), 480-489, 2001 | 33 | 2001 |
| Simulation of duty cycle-based trapping and ejection of massive ions using linear digital quadrupoles: the enabling technology for high resolution time-of-flight mass … J Lee, MA Marino, H Koizumi, PTA Reilly International journal of mass spectrometry 304 (1), 36-40, 2011 | 31 | 2011 |
| Heats of formation of the propionyl ion and radical and 2, 3-pentanedione by threshold photoelectron photoion coincidence spectroscopy JP Kercher, EA Fogleman, H Koizumi, B Sztáray, T Baer The Journal of Physical Chemistry A 109 (5), 939-946, 2005 | 27 | 2005 |
| Collision-Induced Dissociation and Theoretical Studies of Ag+(methanol)n, n = 1− 4 H Koizumi, M Larsen, PB Armentrout, D Feller The Journal of Physical Chemistry A 107 (16), 2829-2838, 2003 | 27 | 2003 |
| Sequential Bond Energies of Fe+(CO2)n, n = 1−5, Determined by Threshold Collision-Induced Dissociation and ab Initio Theory PB Armentrout, H Koizumi, M MacKenna The Journal of Physical Chemistry A 109 (50), 11365-11375, 2005 | 26 | 2005 |
| Trapping of intact, singly-charged, bovine serum albumin ions injected from the atmosphere with a 10-cm diameter, frequency-adjusted linear quadrupole ion trap H Koizumi, WB Whitten, PTA Reilly Journal of the American Society for Mass Spectrometry 19 (12), 1942-1947, 2008 | 23 | 2008 |
| Heats of formation of GeH4, GeF4 and Ge (CH3) 4 H Koizumi, JZ Dávalos, T Baer Chemical physics 324 (2-3), 385-392, 2006 | 23 | 2006 |
| Reaction of with dimethoxyethane: Competition between association and multiple dissociation channels H Koizumi, F Muntean, PB Armentrout The Journal of chemical physics 120 (2), 756-766, 2004 | 21 | 2004 |
| Derivation of mathematical expressions to define resonant ejection from square and sinusoidal wave ion traps H Koizumi, WB Whitten, PTA Reilly, E Koizumi International Journal of Mass Spectrometry 286 (2-3), 64-69, 2009 | 19 | 2009 |
| Agile high resolution arbitrary waveform generator with jitterless frequency stepping PTA Reilly, H Koizumi US Patent 7,714,623, 2010 | 15 | 2010 |
| Controlling the expansion into vacuum—the enabling technology for trapping atmosphere-sampled particulate ions H Koizumi, X Wang, WB Whitten, PTA Reilly Journal of the American Society for Mass Spectrometry 21 (2), 242-248, 2010 | 15 | 2010 |
| The Heats of Formation of tert-Butyl Isocyanide and Other Alkyl Isocyanides by Photoelectron Photoion Coincidence Spectroscopy H Koizumi, T Baer The Journal of Physical Chemistry A 108 (28), 5956-5961, 2004 | 15 | 2004 |
| Theoretical and ATR-FTIR study of free 12-crown-4 in aqueous solution T Arora, H Ali, WA Burns, E Koizumi, H Koizumi Chemical Physics Letters 502 (4-6), 253-258, 2011 | 14 | 2011 |
| A novel phase-coherent programmable clock for high-precision arbitrary waveform generation applied to digital ion trap mass spectrometry H Koizumi, B Jatko, WH Andrews Jr, WB Whitten, PTA Reilly International Journal of Mass Spectrometry 292 (1-3), 23-31, 2010 | 14 | 2010 |
| Characterization of quadrupole mass filters operated with frequency-asymmetric and amplitude-asymmetric waveforms GF Brabeck, H Koizumi, E Koizumi, PTA Reilly International Journal of Mass Spectrometry 404, 8-13, 2016 | 11 | 2016 |
