Mr. Kyle N. Crabtree
Professional InformationGraduate Student: Analytical Chemistry |
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Bio
I was born and raised in Evansville, Indiana, where I graduated from Benjamin Bosse High School in 2003. I received my B.S. in Chemistry from Ball State University in December 2006. During my time at Ball State, I worked in the research group of Dr. James Poole, and studied the kinetics and photochemistry of azidopyridine-N-oxide molecules. I am currently a fifth-year graduate student in the McCall lab. I'm married and have two children, both boys.Current Research
My research in the McCall lab has been centered around developing components of the SCRIBES instrument. My first project was working with Andrew Mills to construct the difference frequency generation laser (DFG) that will be used with SCRIBES to acquire vibrational spectra of molecular ions. This laser was then used to characterize a pulsed supersonic expansion source used to determine the dissociative recombination rate of H3+.
After working with the difference frequency laser, I began developing a continuous supersonic expansion discharge source for the SCRIBES experiment. This source has proven to be a reliable source of ions; having operated in excess of 200 hours without failure. To characterize the source, I built a second DFG as well as a new cavity ringdown spectrometer. The DFG consists of a MgO-doped periodicallly-poled LiNbO3 crystal pumped by a 532 nm Nd:YVO4 laser and a tunable cw dye laser, and it is capable of producing cw single-frequency light from 2.2-4.8 μm. I have used this laser together with the cavity ringdown spectrometer to measure the rotational temperature of H3+ ions in order to determine the cooling performance of the source.
Since characterizing the continuous expansion source, I have been working on projects related to the chemical physics of H3+: measuring its low-temperature nuclear-spin-dependent dissociative recombination rate with electrons, and studying the spin dependence of the H3+ + H2 chemical reaction in laboratory and interstellar plasmas.
Papers
| 7 | K. N. Crabtree, B. A. Tom and B. J. McCall "Nuclear Spin Dependence of the Reaction of H3+ with H2. I. Kinetics and Modeling" Journal of Chemical Physics (2011), 134, 194310. |
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| 6 | K. N. Crabtree, C. A. Kauffman, B. A. Tom, E. Beçka, B. A. McGuire and B. J. McCall "Nuclear Spin Dependence of the Reaction of H3+ with H2. II. Experimental Measurements" Journal of Chemical Physics (2011), 134, 194311. |
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| 5 | K. N. Crabtree, N. Indriolo, H. Kreckel, B. A. Tom and B. J. McCall "On the Ortho:Para Ratio of H3+ in Diffuse Molecular Clouds" Astrophysical Journal (2011), 729, 15. |
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| 4 | H. Kreckel, O. Novotny, K. N. Crabtree, H. Buhr, A. Petrignani, B. A. Tom, R. D. Thomas, M. H. Berg, D. Bing, M. Grieser, C. Krantz, M. Lestinsky, M. B. Mendes, C. Nordhorn, R. Repnow, J. Stuetzel, A. Wolf and B. J. McCall "High-Resolution Storage-Ring Measurements of the Dissociative Recombination of H3+ Using a Supersonic Expansion Ion Source" Physical Review A (2010), 82, 042715. |
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| 3 | K. N. Crabtree, C. A. Kauffman and B. J. McCall "A Modular and Robust Continuous Supersonic Expansion Discharge Source" Review of Scientific Instruments (2010), 81, 086103. |
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| 2 | B. A. Tom, A. A. Mills, M. B. Wiczer, K. N. Crabtree and B. J. McCall "Development and Characterization of a Source of Rotationally Cold, Enriched para-H3+" Journal of Chemical Physics (2010), 132, 081103. |
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| 1 | B. A. Tom, V. Zhaunerchyk, M. B. Wiczer, A. A. Mills, K. N. Crabtree, M. Kaminska, W. D. Geppert, M. Hamberg, M. af Ugglas, E. Vigren, W. J. van der Zande, M. Larsson, R. D. Thomas, and B. J. McCall "Dissociative Recombination of Highly Enriched Para-H3+" Journal of Chemical Physics (2009), 130, 031101. |
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Talks
| 21 | K. N. Crabtree, N. Indriolo, H. Kreckel, B. A. Tom and B. J. McCall "Nuclear Spin of H3+ in Diffuse Molecular Clouds" Sixty-Sixth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2011. |
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| 20 | K. N. Crabtree, B. A. Tom and B. J. McCall "Modeling the Influence of Nuclear Spin in the Reaction of H3+ with H2" Sixty-Sixth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2011. |
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| 19 | K. N. Crabtree, C. A. Kauffman, B. A. Tom, E. Beçka, B. A. McGuire and B. J. McCall "Spectroscopic Measurements of the Reaction H3+ + H2 → H2 + H3+" Sixty-Sixth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2011. |
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| 18 | H. Kreckel, O. Novotny, K. N. Crabtree, H. Buhr, A. Petrignani, B. A. Tom, R. D. Thomas, M. H. Berg, D. Bing, M. Grieser, C. Krantz, M. Lestinsky, M. B. Mendes, C. Nordhorn, R. Repnow, J. Stützel, A. Wolf and B. J. McCall "Storage Ring Measurements of the Dissociative Recombination of H3+: a Closer Look" Midwest Astrochemistry Meeting, University of Illinois, Urbana, IL, 2010. |
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| 17 | K. N. Crabtree, N. Indriolo, H. Kreckel, B. A. Tom and B. J. McCall "The ortho:para Ratio of H3+ in Diffuse Molecular Clouds" Midwest Astrochemistry Meeting, University of Illinois, Urbana, IL, 2010. |
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| 16 | K. N. Crabtree, N. Indriolo, H. Kreckel and B. J. McCall "The ortho:para Ratio of H3+ in Laboratory and Astrophysical Plasmas" Spectroscopy of Molecular Ions in the Laboratory and in Space, Kos, Greece, 2010. |
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| 15 | H. Kreckel, O. Novotny, K. N. Crabtree, H. Buhr, A. Petrignani, B. A. Tom, R. D. Thomas, M. H. Berg, D. Bing, M. Grieser, C. Krantz, M. Lestinsky, M. B. Mendes, C. Nordhorn, R. Repnow, J. Stuetzel, A. Wolf and B. J. McCall "Storage Ring Measurements of the Dissociative Recombination of H3+: A Closer Look" Eighth International Conference on Dissociative Recombination: Theory, Experiments and Applications, Granlibakken, Lake Tahoe, CA, 2010. |
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| 14 | C. A. Kauffman, K. N. Crabtree and B. J. McCall "The Performance of a Continuous Supersonic Expansion Discharge Source" Sixty-Fifth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2010. |
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| 13 | K. N. Crabtree, B. A. Tom, C. A. Kauffman and B. J. McCall "Nuclear Spin Dependence of the Reaction of H3+ with H2" Sixty-Fifth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2010. |
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| 12 | K. N. Crabtree, B. A. Tom, C. A. Kauffman, B. A. McGuire and B. J. McCall "Experimental Measurements of the H3+ + H2 → (H5+)* → H2 + H3+ Reaction" 239th American Chemical Society National Meeting, San Francisco, CA, 2010. |
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| 11 | H. Kreckel, A. A. Mills, M. Perera, B. M. Siller, K. N. Crabtree, C. A. Kauffman and B. J. McCall "High Resolution Spectroscopy of Molecular Ion Beams" 239th American Chemical Society National Meeting, San Francisco, CA, 2010. |
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| 10 | K. N. Crabtree, B. A. Tom, C. A. Kauffman, B. A. McGuire and B. J. McCall "Implications of the H3+ + H2 → H2 + H3+ Reaction for the ortho- to para-H3+ Ratio in Interstellar Clouds" 239th American Chemical Society National Meeting, San Francisco, CA, 2010. |
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| 9 | H. Kreckel, A. A. Mills, M. Perera, B. M. Siller, K. N. Crabtree, C. A. Kauffman and B. J. McCall "SCRIBES: Sensitive, Cooled, Resolved Ion-BEam Spectroscopy" Second Midwest Astrochemistry Meeting, University of Illinois, 2009. |
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| 8 | A. A. Mills, K. B. Ford, H. Kreckel, M. Perera, K. N. Crabtree and B. J. McCall "Indirect Terahertz Spectroscopy of Molecular Ions Using Highly Accurate and Precise Mid-IR Spectroscopy" Sixty-Fourth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2009. |
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| 7 | C. A. Kauffman, K. N. Crabtree and B. J. McCall "A Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions" Sixty-Fourth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2009. |
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| 6 | K. N. Crabtree, C. A. Kauffman and B. J. McCall "Performance of a Continuous Supersonic Expansion Discharge Nozzle Evaluated by Laser-Induced Fluorescence Spectroscopy" Sixty-Fourth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2009. |
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| 5 | M. Perera, K. N. Crabtree, K. B. Ford, H. Kreckel, A. A. Mills and B. J. McCall "Progress in the Development of an Infrared Ion Beam Spectrometer" Sixty-Fourth International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, OH, 2009. |
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| 4 | B. A. Tom, M. B. Wiczer, A. A. Mills, K. N. Crabtree and B. J. McCall "The H3+ + H2 Reaction: A Possible Mechanism for para-H3+ Enrichment in the Diffuse Interstellar Medium" Inaugural Midwest Astrochemistry Meeting, University of Illinois, 2008. |
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| 3 | K. N. Crabtree and B. J. McCall "Design and Construction of a Laser Beam Profiler for Use with Continuous Wave Lasers in the Mid-Infrared" Sixty-Third International Symposium on Molecular Spectroscopy, Ohio State University, Columbus, OH, 2008. |
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| 2 | A. A. Mills, K. N. Crabtree, and B. J. McCall "Progress on the Development of an Infrared Ion Beam Spectrometer" Sixty-Third International Symposium on Molecular Spectroscopy, Ohio State University, Columbus, OH, 2008. |
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| 1 | B. A. Tom, M. B. Wiczer, A. A. Mills, K. N. Crabtree, and B. J. McCall "Observation of Nuclear Spin Selection Rules in Supersonically Expanding Plasmas Containing H3+" Sixty-Third International Symposium on Molecular Spectroscopy, Ohio State University, Columbus, OH, 2008. |
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Posters
| 11 | J. N. Hodges, K. N. Crabtree, B. M. Siller, M. W. Porambo, A. A. Mills, and B. J. McCall "Indirect THz Spectroscopy of Molecular Ions" Midwest Astrochemistry Meeting, University of Illinois, Urbana, IL, 2011. |
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| 10 | K. N. Crabtree, N. Indriolo, H. Kreckel, B. A. Tom, C. A. Kauffman, E. Becka, B. A. McGuire and B. J. McCall "Nuclear Spin Dependence of Hydrogenic Plasmas in the Laboratory and the Diffuse Interstellar Medium" Midwest Astrochemistry Meeting, University of Illinois, Urbana, IL, 2011. |
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| 9 | K. N. Crabtree, N. Indriolo, H. Kreckel, B. A. Tom, C. A. Kauffman, E. Beçka, B. A. McGuire and B. J. McCall "Nuclear Spin Dependence of Hydrogenic Plasmas in the Laboratory and the Diffuse Interstellar Medium" International Astronomical Union Symposium 280: The Molecular Universe, Universidad Castilla la Mancha, Toledo, Spain, 2011. |
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| 8 | C. A. Kauffman, K. N. Crabtree, B. A. Tom, E. Beçka and B. J. McCall "Experimental Measurements of the H3+ + H2 → H3+ + H2 Reaction in a Hollow Cathode" Midwest Astrochemistry Meeting, University of Illinois, Urbana, IL, 2010. |
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| 7 | H. Kreckel, K. N. Crabtree, C. A. Kauffman, B. A. Tom, N. Indriolo, B. A. McGuire, O. Novotny, M. Berg, D. Bing, H. Buhr, A Petrignani, C. Krantz, M. Lestinky, M. Mendes, C. Nordhorn, J. Stützel, R. Thomas, A. Wolf and B. J. McCall "Nuclear Spin Effects in the Reactions of H3+ with H2 and Electrons" Spectroscopy of Molecular Ions in the Laboratory and in Space, Kos, Greece, 2010. |
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| 6 | K. N. Crabtree, N. Indriolo, H. Kreckel, C. A. Kauffman, E. Becka, B. A. Tom and B. J. McCall "Nuclear Spin Effects in Hydrogenic Plasmas in the Laboratory and Interstellar Medium" Gordon Research Conference on Atomic and Molecular Interactions, Colby-Sawyer College, New London, NH, 2010. |
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| 5 | C. A. Kauffman, K. N. Crabtree and B. J. McCall "The Performance of a Continuous Supersonic Expansion Discharge Source" Second Midwest Astrochemistry Meeting, University of Illinois, 2009. |
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| 4 | K. N. Crabtree, K. B. Ford, C. A. Kauffman, H. Kreckel, A. A. Mills, M. Perera, B. M. Siller and B. J. McCall "SCRIBES: Sensitive, Cooled, Resolved, Ion BEam Spectroscopy" Advancing Chemical Understanding Through Astronomical Observations, Green Bank Telescope, Green Bank, WV, 2009. |
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| 3 | A. A. Mills, H. Kreckel, M. Perera, K. N. Crabtree, B. M. Siller, K. B. Ford and B. J. McCall "Ultrasensitive Infrared Spectroscopy of Molecular Ions" Air Force Molecular Dynamics Contractors Meeting, San Diego, CA, 2009. |
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| 2 | A. A. Mills, K. B. Ford, K. N. Crabtree and B. J. McCall "High Resolution Spectroscopy of Molecular Ions: Development of an Instrument" Inaugural Midwest Astrochemistry Meeting, University of Illinois, 2008. |
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| 1 | K. N. Crabtree, C. A. Kauffman and B. J. McCall "A Continuous Supersonic Expansion Discharge Source for the Production of Cold Molecular Ions" Inaugural Midwest Astrochemistry Meeting, University of Illinois, 2008. |
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Other Publications
| 1 | K. N. Crabtree "Design of a Continuous Supersonic Expansion Discharge Source for the Acquisition of a Rotationally-Cold Vibrational Spectrum of CH5+ with the SCRIBES Instrument" Research Prospectus for Preliminary Examination, University of Illinois, 2009. |
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Pre-McCall Group Publications
K. N. Crabtree, K. J. Hostetler, T. E. Munsch, P. Neuhaus, P. M. Lahti, W. Sander and J. S. Poole, "A Comparative Study of the Azidopyridine-1-Oxides" Journal of Organic Chemistry (2008), 73, 3441 - 3451.K. J. Hostetler, K. N. Crabtree and J. S. Poole, "The Photochemistry of 4-Azidopyridine-1-Oxide" Journal of Organic Chemistry (2006), 71, 9023-9029.