Abstract

An improved apparatus for performing vacuum uv flash photolysis-kinetic spectroscopy has been constructed. The device consists of a compact coaxial arrangement of six capacitors and six electrode pairs symmetrically placed about a hexagonal reaction vessel of large aperture. The reaction vessel contains LiF windows to transmit far uv radiation. The six pairs of electrodes and six capacitors are connected separately and are synchronously fired, uniformly illuminating the reaction cell. The photolytic light pulse duration is about 5 μsec. More than 1018 quanta enter the reaction vessel in the spectral region between 1050 Å and 1600 Å. The essential operating features of the apparatus are described.

© 1967 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).
  2. G. Black, G. Porter, Proc. Roy. Soc. (London) A266, 185 (1962).
  3. F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 900 (1963).
  4. W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
    [CrossRef]
  5. W. Braun, J. R. McNesby, A. M. Bass, unpublished results.
  6. L. S. Nelson, D. A. Ramsay, J. Opt. Soc. Am. 46, 768 (1956).
    [CrossRef]
  7. D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).
  8. F. Stuhl, thesis, University of Bonn (1963).
  9. E. Hintz, H. Beerwald, in Proceedings of the International Conference on Ionization Phenomena in Gases (North Holland Publishing Co., Amsterdam, 1960), Vol. I, p. 468.

1966 (1)

W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
[CrossRef]

1963 (2)

F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 900 (1963).

D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).

1962 (2)

K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).

G. Black, G. Porter, Proc. Roy. Soc. (London) A266, 185 (1962).

1956 (1)

Bass, A. M.

W. Braun, J. R. McNesby, A. M. Bass, unpublished results.

Bayes, K. D.

K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).

Becker, K. H.

K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).

Beerwald, H.

E. Hintz, H. Beerwald, in Proceedings of the International Conference on Ionization Phenomena in Gases (North Holland Publishing Co., Amsterdam, 1960), Vol. I, p. 468.

Black, G.

G. Black, G. Porter, Proc. Roy. Soc. (London) A266, 185 (1962).

Braun, W.

W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
[CrossRef]

W. Braun, J. R. McNesby, A. M. Bass, unpublished results.

Hintz, E.

E. Hintz, H. Beerwald, in Proceedings of the International Conference on Ionization Phenomena in Gases (North Holland Publishing Co., Amsterdam, 1960), Vol. I, p. 468.

Kley, D.

D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).

McNesby, J. R.

W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
[CrossRef]

W. Braun, J. R. McNesby, A. M. Bass, unpublished results.

Nelson, L. S.

Porter, G.

G. Black, G. Porter, Proc. Roy. Soc. (London) A266, 185 (1962).

Ramsay, D. A.

Stuhl, F.

D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).

F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 900 (1963).

F. Stuhl, thesis, University of Bonn (1963).

Welge, K. H.

W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
[CrossRef]

F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 900 (1963).

D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).

K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).

J. Chem. Phys. (1)

W. Braun, K. H. Welge, J. R. McNesby, J. Chem. Phys. 46, 2650 (1966).
[CrossRef]

J. Opt. Soc. Am. (1)

Proc. Roy. Soc. (London) (1)

G. Black, G. Porter, Proc. Roy. Soc. (London) A266, 185 (1962).

Z. Naturforsch. (3)

F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 900 (1963).

D. Kley, F. Stuhl, K. H. Welge, Z. Naturforsch. 18a, 906 (1963).

K. D. Bayes, K. H. Becker, K. H. Welge, Z. Naturforsch. 17a, 656 (1962).

Other (3)

F. Stuhl, thesis, University of Bonn (1963).

E. Hintz, H. Beerwald, in Proceedings of the International Conference on Ionization Phenomena in Gases (North Holland Publishing Co., Amsterdam, 1960), Vol. I, p. 468.

W. Braun, J. R. McNesby, A. M. Bass, unpublished results.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1
Fig. 1

Isometric drawing of the flash photolysis apparatus showing: C, capacitor; HVE, high voltage electrode; GE, ground electrode; HVC, high voltage connection; GEC, ground electrode connection; CG, copper can (ground connection); M, Mylar insulation; H, hexagonal frame; RV, hexagonal reaction vessel (LiF windows not shown); LT, Lucite tube; LF, Lucite flange; and TP, trigger pin.

Fig. 2
Fig. 2

Time and spacial display of flashes. Upper left: photomultiplier trace of a synchronous firing, time scale 5 μsec/division. Lower left: end-on photograph of a synchronous firing. Upper right: typical photomultiplier trace of a nonsynchronous firing, time scale 5 μsec/division. Lower right: photograph typical of poor synchronization.

Fig. 3
Fig. 3

Relative absorption of vacuum uv radiation by the CO2 actinometer as a function of CO2 pressure in the reaction cell.

Fig. 4
Fig. 4

Approximate relative light intensity reaching each LiF window.

Metrics