Transfer of Rotational Energy in Molecular Collisions I. Elementary Processes Which Lead to Abnormal Rotation of the HgH Molecule (English)

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In: The Journal of Chemical Physics   ;  4 ,  8  ;  513-525  ;  1936

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By the application of photographic photometry, the intensity distribution within the HgH 4017 band excited by mercury‐sensitized fluorescence has been studied as a function of the pressure of nitrogen and the pressure of water vapor present in the fluorescence tube. From the effect which the foreign gases exert on the observed distribution of molecules among rotational levels, conclusions are drawn regarding the transfers of energy which occur in collisions of the HgH molecule with metastable Hg atoms and with normal H2O and N2 molecules. The proportion of excited HgH molecules with rotational energy greater than 0.2 volt greatly exceeds the thermal value under all circumstances; the excess rotational energy has its source in the two following processes. In a collision between an unexcited HgH molecule and a metastable Hg atom, the excitation energy of the latter is sometimes taken up as both rotational and electronic energy of the HgH molecule. In a collision between a normal N2 molecule and a highly excited HgH molecule, part of the electronic and vibrational energy of the latter is converted into rotational energy.

Table of contents – Volume 4, Issue 8

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461
The Reactions of Deuterium Atoms with Methane and Ethane
Steacie, E. W. R. / Phillips, N. W. F. | 1936
469
The Absorption Spectrum of Methyl Alcohol Vapor in the Photographic Infrared
Badger, Richard M. / Bauer, Simon H. | 1936
474
The Continuous Absorption Spectrum of Bromine: A New Interpretation
Acton, A. P. / Aickin, R. G. / Bayliss, N. S. | 1936
479
The Theoretical Treatment of Chemical Reactions Produced by Ionization Processes Part I. The Ortho‐Para Hydrogen Conversion by Alpha‐Particles
Eyring, Henry / Hirschfelder, J. O. / Taylor, Hugh S. | 1936
492
The Electron Affinity of Bromine Atoms from Space‐Charge Effects
Glockler, Geo. / Calvin, Melvin | 1936
493
The Limiting High Temperature Rotational Partition Function of Nonrigid Molecules VI. The Methanol Equilibrium
Kassel, Louis S. | 1936
497
Kinetics of Recombination of Iodine Atoms
Rabinowitch, E. / Wood, W. C. | 1936
504
The Homogeneous Unimolecular Decomposition of Gaseous Alkyl Nitrites VI. The Decomposition of n‐Butyl Nitrite
Steacie, E. W. R. / Smith, W. McF. | 1936
508
The Normal Vibrations and the Isotope Effect of Molecules of the Type X2YN with an N‐Fold Axis of Symmetry
Schimmel, Herbert | 1936
513
Transfer of Rotational Energy in Molecular Collisions I. Elementary Processes Which Lead to Abnormal Rotation of the HgH Molecule
Rieke, F. F. | 1936
526
The Effect of Rotational Distortion on the Thermodynamic Properties of Water and Other Polyatomic Molecules
Wilson, E. Bright | 1936
529
Thermodynamic Properties of Phosphorus Compounds
Anderson, Thomas F. / Yost, Don M. | 1936
530
Atomic Dimensions from the Coefficients of Compressibility and Thermal Expansion
Djang, G. F. | 1936
532
The Structure of Rubrene and Some Remarks on the ``Ortho‐Effect''
Bergmann, E. / Herlinger, E. | 1936
535
The Raman Spectra of Deutero‐acetones and Methyl Alcohol‐d
Bates, J. R. / Anderson, Leigh C. / Halford, J. O. | 1936
536
Raman Spectrum of Deutero‐Acetaldehyde
Wood, R. W. | 1936
537
Preliminary Note on the Phase Relationships in the Nickel‐Tin System
Fetz, Erich / Jette, Eric R. | 1936