John Huennekens


 




Department of Physics
16 Memorial Dr. East                        Back to Lehigh Physics Department Home Page
Lehigh University
Bethlehem, PA 18015                       Link to Research Experiences for Undergraduates (REU) Home Page

USA                      
 
jph7@lehigh.edu
 
 
 

          Publications

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light”, P. T. Arndt, J. Huennekens, C. Packard, V. Tran, J. Carey, R. Livingston, V. M. Marcune, B. A. Rowe, J. Ng, J. Qi, A. M. Lyyra, and E. H. Ahmed, J. Chem. Phys. 153, 184310 (17 pages) (2020).
            Supplementary Materials for
The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light” (Appendices A - F)


“Fitting an experimental potential energy curve for the 10(0+) [43Π0] electronic state of NaCs”, A. Steely, R. L. Myers, A. Kortyna, J. Huennekens, R. F. Malenda, and C. Faust, J. Chem. Phys. 151, 024307 (8 pages) (2019).
            Supplementary Materials for “Fitting an experimental potential energy curve for the 10(0+) [43Π0] electronic state of NaCs”


“Measurement of the Na2 51Σg+ A1Σu+ and 61Σg+ A1Σu+ transition dipole moments using optical-optical double resonance and Autler-Townes spectroscopy”, A. Sanli, X. Pan, S. Magnier, J. Huennekens, A. M. Lyrra, and E. H. Ahmed, J. Chem. Phys. 147, 204301 (8 pages) (2017).


“Rotationally inelastic collisions of excited NaK and NaCs molecules with noble gas and alkali atom perturbers”,
J. Jones, K. Richter, T. J. Price, A. J. Ross, P. Crozet, C. Faust, R. F. Malenda, S. Carlus, A. P. Hickman, and J. Huennekens, J. Chem. Phys. 147, 144303 (26 pages) (2017).
            Supplementary Materials for
“Rotationally inelastic collisions of excited NaK and NaCs molecules with noble gas and alkali atom perturbers”:
                 Supplementary Figures 1-26 NaK(v=16, J=30)
                 Supplementary Figures 27-34 NaK(v=0,1,2)
                 Supplementary Figures 35-45 NaCs(v=14, J=32)
                 Supplementary Figures 46-53 Theory NaK(v=0,1, 2)
                 Supplementary Tables


“Experimental studies of the NaCs 12(0+) [71Σ+] state: Spin-orbit and non-adiabatic interactions and quantum interference in the 12(0+) [71Σ+] and 11(0+) [53Π0] emission spectra”,
C. Faust, J. Jones, J. Huennekens, and R. W. Field, J. Chem. Phys. 146, 104302 (19 pages) (2017).
            Supplementary Materials for
“Experimental studies of the NaCs 12(0+) [71Σ+] state: Spin-orbit and non-adiabatic interactions and quantum interference in the 12(0+) [71Σ+] and 11(0+) [53Π0] emission spectra”


“Experimental and theoretical studies of the coupled A1
Σ+ and b3Π states of NaK”, H. Harker, P. Crozet, A. J. Ross, K. Richter, J. Jones, C. Faust, J. Huennekens, A. V. Stolyarov, H. Salami, and T. Bergeman, Phys. Rev. A 92, 012506 (12 pages) (2015).
            Supplementary Materials for
“Experimental and theoretical studies of the coupled A1Σ+ and b3Π states of NaK”:
                 nakterm.txt
                 nakinput.txt
                 nakfit.txt
                 nakabpot.txt
                 pnaka.pdf
                 pnakb.pdf
                 pnakc.pdf
                 pnakd.pdf
                 pnake.pdf
                 pnakf.pdf


“Optical control of collisional population flow between molecular electronic states of different spin multiplicity”,
E. H. Ahmed, X. Pan, J. Huennekens, and A. M. Lyyra, Phys. Rev. A 89, 061401(R) (5 pages) (2014).


“The Autler-Townes Effect in Molecules: Observations, Theory, and Applications”,
E. H. Ahmed, J. Huennekens, T. Kirova, J. Qi and A. M. Lyyra, in Adv. At. Mol. Opt. Phys., edited by E. Arimondo, P. R. Berman and C. C. Lin (Elsevier, Amsterdam, 2012), Vol. 61, pp. 467-514.


“Experimental studies of the NaCs 53Π0 and 1(a)3Σ+ states”, S. Ashman, B. McGeehan, C. M. Wolfe, C. Faust, K. Richter, J. Jones, A. P. Hickman, and J. Huennekens, J. Chem. Phys. 136, 114313 (14 pages) (2012).
          Supplementary Materials for
“Experimental studies of the NaCs 53Π0 and 1(a)3Σ+ states”.


Quantum control of the spin-orbit coupling interaction using the AC Stark effect”, E. H. Ahmed, S. Ingram, T. Kirova, O. Salihoglu, J. Huennekens, J. Qi, Y. Guan, and A. M. Lyyra, Phys. Rev. Lett. 107, 163601 (5 pages) (2011).


Electromagnetically induced transparency in an open V-type molecular system”, A. Lazoudis, T. Kirova, P. Qi, E. H. Ahmed, J. Huennekens, and A. M. Lyyra, Phys. Rev. A 83, 063419 (12 pages) (2011).


Collisional transfer of population and orientation in NaK”, C. M. Wolfe, S. Ashman, J. Bai, B. Beser, E. H. Ahmed, A. M. Lyyra, and J. Huennekens, J. Chem. Phys. 134, 174301 (17 pages) (2011).
           
Supplementary Materials for “Collisional transfer of population and orientation in NaK”.


“Global analysis of data on the spin-orbit coupled A1Σu+ and b3Πu states of Cs2”, J. Bai, E. H. Ahmed, B. Beser, Y. Guan, S. Kotochigova, A. M. Lyyra, S. Ashman, C. M. Wolfe, J. Huennekens, F. Xie, D. Li, L. Li, M. Tamanis, R. Ferber, A. Drozdova, E. Pazyuk, A. V. Stolyarov, J. G. Danzl, H.-C. Nägerl, N. Bouloufa, O. Dulieu, C. Amiot, H. Salami, and T. Bergeman, Phys. Rev. A 83, 032514 (17 pages) (2011).

“NaK bound-free and bound-bound 43Σ+ → a3Σ+ emission”, B. M. McGeehan, S. Ashman, C. M. Wolfe, R. Steinhardt, M. L. Monaco, J. Huennekens, and A. P. Hickman, J. Mol. Spectrosc. 265, 74-80 (2011).
           
Supplementary Materials for “NaK bound-free and bound-bound 43Σ+ → a3Σ+ emission”.


Effect of spin-orbit coupling on the coupled 33Π and 43Π excited states of NaK”, A. Wilkins, L. Morgus, J. Huennekens, and A. P. Hickman, J. Mol. Spectrosc. 258, 13-19 (2009).           
            Supplementary Materials for Effect of spin-orbit coupling on the coupled 33Π and 43Π excited states of NaK<

Spectroscopic observations, spin-orbit functions, and coupled channels deperturbation analysis of data on the A1Σu+ and b3Πu states of Rb2”, H. Salami, T. Bergeman, B. Beser, J. Bai, E. Ahmed, S. Kotochigova, A. M. Lyyra, J. Huennekens, C. Lisdat, A. V. Stolyarov, O. Dulieu, P. Crozet, and A. J. Ross, Phys. Rev. A 80, 022515 (14 pages) (2009).


Measurement of absolute transition dipole moment functions of the 31Π → 1(X)1Σ+ and 31Π → 2(A)1Σ+ transitions in NaK using Autler-Townes spectroscopy and calibrated fluorescence
”,
S. J. Sweeney, E. Ahmed, P. Qi, T. Kirova, A. M. Lyyra, and J. Huennekens, J. Chem. Phys. 129, 154303 (10 pages) (2008).


“Experimental mapping of the absolute magnitude of the transition dipole moment function μe(R) of the Na2 A1Σu+ - X1Σu+ transition, E. H. Ahmed, P. Qi, B. Beser, J. Bai, R. W. Field, J. P. Huennekens, and A. M. Lyyra, Phys. Rev. A 77, 053414 (7 pages) (2008).

“Hyperfine state changing collisions of Cs(6P1/2) atoms with argon perturbers”, L. Morgus, T. Morgus, T. Drake, and J. Huennekens, Phys. Rev. A. 77, 032704 (12 pages) (2008).


“Spin-orbit coupling of the NaK 33Π and 31Π states: Determination of the coupling constant and observation of quantum interference effects”, S. Eckel, S. Ashman, and J. Huennekens, J. Mol. Spectrosc. 242, 182-194 (2007).           
            Supplementary Table to “Spin-orbit coupling of the NaK 33Π and 31Π states: Determination of the coupling constant and observation of quantum interference effects”.


“The 39K2 23Σg+ state: Observation and analysis”, D. Li, F. Xie, Li Li, V. B. Sovkov, V. S. Ivanov, E. Ahmed, A. M. Lyyra, J. Huennekens, and S. Magnier, J. Chem. Phys. 126, 194314 (9 pages) (2007).

             Appendix to “The 39K2 23Σg+ state: Observation and analysis”.


“Nonadiabatic coupling in the 33Π and <43Π states of NaK”, R. D. Miles, L. Morgus, D. O. Kashinski, J. Huennekens, and A. P. Hickman, J. Chem. Phys. 125, 154304 (11 pages) (2006).
            EPAPS tables for “Nonadiabatic coupling in the 33Π and 43Π states of NaK">.


The NaK 11,3Δ states: Theoretical and experimental studies of fine and hyperfine structure of ro-vibrational levels near the dissociation limit”, A. D. Wilkins, L. Morgus, J. Hernandez-Guzman, J. Huennekens, and A. P. Hickman, J. Chem. Phys. 123, 124306 (12 pages) (2005). 
            EPAPS tables for “The NaK 11,3Δ <states: Theoretical and experimental studies of fine and hyperfine structure of ro-vibrational levels near the dissociation limit”.


“Experimental study of the NaK 33Π double minimum state”, L. Morgus, P. Burns, R. D. Miles, A. D. Wilkins, U. Ogba, A. P. Hickman, and J. Huennekens, J. Chem. Phys. 122, 144313 (10 pages) (2005).  
           EPAPS tables for “Experimental study of the NaK 33Π double minimum state”.


“The NaK 1(b)3ΠΩ=0 state hyperfine structure and the 1(b)3ΠΩ=0 ~ 2(A)1Σ+ spin-orbit interaction”, P. Burns, A. D. Wilkins, A. P. Hickman, and J. Huennekens, J. Chem. Phys. 122, 074306 (8 pages) (2005).
           EPAPS tables for “The NaK 1(b)3ΠΩ=0 state hyperfine structure and the 1(b)3ΠΩ=0 ~ 2(A)1Σ+ spin-orbit interaction”.


“Thermalization of fast cesium 5D3/2 atoms in collisions with ground-state cesium atoms”, A. Marks, A. P. Hickman, A. D. Streater, and J. Huennekens - Phys. Rev. A 71, 012711 (14 pages) (2005).


“The 43Σ+ state of NaK: Potential energy curve and hyperfine structure”, P. Burns, L. Sibbach-Morgus, A. D. Wilkins, F. Halpern, L. Clarke, R. D. Miles, Li Li, A. P. Hickman, and J. Huennekens - J. Chem. Phys. 119, 4743-4754 (2003).
            EPAPS Table 1 for “The 43Σ+ state of NaK: Potential energy curve and hyperfine structure”.
            EPAPS Table 2 for “The 43Σ+ state of NaK: Potential energy curve and hyperfine structure”.
            EPAPS Table 3 for “The 43Σ+ state of NaK: Potential energy curve and hyperfine structure”.


“Hyperfine structure of the 13Δg, 23Πg, and 33Σg+ states of 6Li7Li”, Li Li, A. Lazoudis, P. Yi, Y. Liu, J. Huennekens, R. W. Field, and A. M. Lyyra, J. Chem. Phys. 116, 10704–10712 (2002).


“Experimental studies of the NaK 13Δ state”, J. Huennekens, I. Prodan, A. Marks, L. Sibbach, E. Galle, T. Morgus, and Li Li - J. Chem. Phys. 113, 7384-7397 (2000).
            EPAPS Table 1 for “Experimental studies of the NaK 13Δ state”.
            EPAPS Table 2 for “Experimental studies of the NaK 13Δ state”.


“The 43Πg state of Na2: Vibrational numbering and hyperfine structure”, G. Lazarov, A. M. Lyyra, Li Li, and J. Huennekens - J. Mol. Spectrosc. 196, 259-264 (1999).


“Rotational pattern difference in resolved fluorescence spectra with different detection schemes”, H. Chen, Li Li, G. Lazarov, X. Wang, A. M. Lyyra, J. Huennekens, and R. W. Field - J. Mol. Spectrosc. 196, 197-211 (1999).


“New vibrational numbering and potential energy curve for the 33Πg electronic state of the Li2 molecule”, V. S. Ivanov, V. B. Sovkov, Li Li, A. M. Lyyra, G. Lazarov, and J. Huennekens - J. Mol. Spectrosc. 194, 147-155 (1999).


“Experimental study of the NaK 31Π state”, E. Laub, I. Mazsa, S. C. Webb, J. La Civita, I. Prodan, Z. J. Jabbour, R. K. Namiotka, and J. Huennekens - J. Mol. Spectrosc. 193, 376-388 (1999).  “Erratum to Experimental study of the NaK 31Π state[J. Mol. Spectrosc. (1999) 193 376-388], E. Laub, I. Mazsa, S. C. Webb, J. La Civita, I. Prodan, Z. J. Jabbour, R. K. Namiotka, and J. Huennekens - J. Mol. Spectrosc. 221, 142-144 (2003).
            EPAPS Table 1 Revised for  “Erratum to Experimental study of the NaK 31Π state[J. Mol. Spectrosc. (1999) 193 376-388].
            EPAPS Figures 4 and 5 Revised for  “Erratum to Experimental study of the NaK 31Π state[J. Mol. Spectrosc. (1999) 193 376-388].


“Experimental study of cesium 6PJ + 6PJ 7PJ' + 6S  energy pooling collisions and modelling of the excited atom density in the presence of optical pumping and radiation trapping”, F. de Tomasi, S. Miloševic, P. Verkerk, A. Fioretti, M. Allegrini, Z. J. Jabbour, and J. Huennekens - J. Phys. B 30, 4991-5008 (1997).


“Energy-pooling collisions in potassium: 4PJ + 4PJ 4S + (nl = 5P, 6S, 4D)”, R. K. Namiotka, J. Huennekens, and M. Allegrini - Phys. Rev. A 56, 514-520 (1997).


“A study of the predissociation of NaK molecules in the 61Σ+ state by optical-optical double resonance spectroscopy”, Z. J. Jabbour and J. Huennekens - J. Chem. Phys. 107, 1094-1105 (1997).
            PAPS Tables for “A study of the predissociation of NaK molecules in the 61Σ+ state”.


“Energy pooling collisions in cesium: 6PJ + 6PJ 6S + (nl = 7P, 6D, 8S, 4F)”, Z. J. Jabbour, R. K. Namiotka, J. Huennekens, M. Allegrini, S. Miloševic, and F. de Tomasi - Phys. Rev. A 54, 1372-1384 (1996).


“Diffusion of barium atoms in the 6s5d 3DJ metastable levels and the 6s2 1S0 ground state through noble-gas perturbers”, R. K. Namiotka, E. Ehrlacher, J. Sagle, M. Brewer, D. J. Namiotka, A. P. Hickman, A. D. Streater, and J. Huennekens - Phys. Rev. A 54, 449-461 (1996).


“Measurement and modelling of intensity dependent absorption and transit relaxation on the cesium D1 line”, J. Sagle, R. K. Namiotka, and J. Huennekens - J. Phys. B 29, 2629-2643 (1996).


“Measurement of the self-broadening rate coefficients of the cesium resonance lines”, Z. J. Jabbour, J. Sagle, R. K. Namiotka, and J. Huennekens - J. Quant. Spectrosc. Radiat. Transfer 54, 767-778 (1995).


“Thermalization of velocity-selected excited-state populations by resonance exchange collisions and radiation trapping”, J. Huennekens, R. K. Namiotka, J. Sagle, Z. J. Jabbour, and M. Allegrini - Phys. Rev. A. 51, 4472-4482 (1995).


“Excitation transfer among, and quenching of, the barium 6s5d 3DJ metastable levels due to collisions with argon, nitrogen, and barium perturbers”, E. Ehrlacher and J. Huennekens - Phys. Rev. A 50, 4786-4793 (1994).


“Noble-gas  broadening  rates  for  the  6s2 1S0 6s6p 1,3P1 resonance and intercombination lines of barium”, E. Ehrlacher and J. Huennekens - Phys. Rev. A 47, 3097-3104 (1993).


“Spin-orbit perturbations between the A(2)1Σ+ and b(1)3Π0 states of NaK”, H. Sun and J. Huennekens - J. Chem. Phys. 97, 4714-4722 (1992).


“Noble-gas broadening rates for barium transitions involving the metastable 6s5d 3DJ levels”, E. Ehrlacher and J. Huennekens - Phys. Rev. A 46, 2642-2648 (1992).


“Radiative lifetimes, collisional mixing, and quenching of the cesium 5DJ levels”, A. Sasso, W. Demtröder, T. Colbert, C. Wang, E. Ehrlacher, and J. Huennekens - Phys. Rev. A 45, 1670-1683 (1992).


“Radiation trapping in the far wings of the foreign-gas broadened potassium resonance lines”, T. Colbert and J. Huennekens - Phys. Rev. A 44, 4753-4756 (1991).


“Radiation trapping under conditions of low to moderate line-center optical depth”, T. Colbert and J. Huennekens - Phys. Rev. A 41, 6145-6154 (1990).


“Bound-free 13Π → 13Σ+ emission from the NaK molecule: determination of the 13Σ+ repulsive wall above the dissociation limit”, M. Masters, J. Huennekens, W. T. Luh, L. Li, A. M. Lyyra, K. Sando, V. Zafiropulos, and W. C. Stwalley - J. Chem. Phys. 92, 5801-5813 (1990).


830 nm emission in sodium vapor”,
W. T. Luh, Y. Li, and J. Huennekens, Appl. Phys. B 49, 349-359 (1989).


“NaK 21
Σ+ 11Σ+ band optically pumped laser emission near 1.02 µm”, B. K. Clark, W. T. Luh and J. Huennekens, Appl. Phys. B 49, 155-161 (1989).


“On radiative transport of the resonance lines of sodium”,
J. Huennekens and T. Colbert, J. Quant. Spectrosc. Radiat. Transfer 41, 439-446 (1989).


“Wave mixing and amplified spontaneous emission in pure potassium and mixed sodium-potassium vapors”,
B. K. Clark, M. Masters and J. Huennekens,
Appl. Phys. B 47, 159-167 (1988).


“Excitation-transfer collisions in cesium vapor:  Cs(5D5/2) + Cs(6S1/2 Cs(5D3/2) + Cs(6S1/2)”, B. Keramati, M. Masters and J. Huennekens, Phys. Rev. A 38, 4518-4526 (1988).


“Wave-mixing processes in sodium-potassium vapor”,
B. K. Clark, M. Masters and J. Huennekens, in Advances in Laser Science Vol. III, ed. A. C. Tam, J. L. Gole and W. C. Stwalley, (American Institute of Physics, New York, 1988) p. 167-169.


“Near-infrared bound-free emission from the NaK molecule”,
J. Huennekens, A. Loza, M. Masters, and K. M. Sando, J. Chem. Phys. 88, 6013-6021 (1988).


“Radiation trapping in sodium-noble gas mixtures”,
J. Huennekens, H. J. Park, T. Colbert and S. C. McClain, Phys. Rev. A 35, 2892-2901 (1987).


“Near infrared spectra of the NaK molecule”,
J. Huennekens, T. G. Walker and S. C. McClain, J. Chem. Phys. 83, 4949-4957 (1985).


“Ionization, excitation of high-lying atomic states, and molecular fluorescence in Cs vapor excited at  λ = 455.7 and 459.4 nm”, J. Huennekens, Z. Wu and T. G. Walker, Phys. Rev. A 31, 196-209 (1985).


“Predissociation and collisional depopulation of the Cs2 (E) state”,
Z. Wu and J. Huennekens, J. Chem. Phys. 81, 4433-4446 (1984).


“Observation of the lowest triplet transitions
3Σg+ - 3Σu+ in Na2 and K2, J. Chem. Phys. 80, 4794-4799 (1984), erratum 83, 915 (1985).


“Infrared spectroscopy of a dense potassium vapor jet
”, M. Ligare, S. Schaefer, J. Huennekens and W. Happer, Opt. Commun. 48 39-43 (1983).


“Associative ionization in collisions between two Na (3P) atoms”, J. Huennekens and A. Gallagher, Phys. Rev A 28, 1276-1287 (1983).


“Radiation diffusion and saturation in optically thick Na vapor”, J. Huennekens and A. Gallagher, Phys. Rev. A 28, 238-247 (1983).


“Resonance broadening of the sodium D lines”,
J. Huennekens and A. Gallagher, in Spectral Line Shapes Vol. 2, K. Burnett ed., (Walter de Gruyter and Co., Berlin, 1983) pages 665-678.


“Self-broadening of the sodium resonance lines and excitation transfer between the 3P3/2 and 3P1/2 levels”,
J. Huennekens and A. Gallagher, Phys. Rev. A 27, 1851-1864 (1983).


“Cross sections for energy transfer in collisions between two excited sodium atoms”,
J. Huennekens and A. Gallagher, Phys. Rev. A 27, 771-784 (1983).


“Collisional and radiative processes in sodium vapor”,
J. Huennekens, Ph.D. thesis, University of Colorado (1982).














 



 
 
 
 
 
URL: http://www.lehigh.edu/~jph7/jph7.html

Last Modified: Thursday November 17, 2022, 6:58 pm EST.