Electron photodetachment from I− ions has been observed using an optogalvanic technique in which an electrical discharge in iodine vapor was probed with a pulsed dye laser. The first photodetachment threshold, corresponding to the onset of production of I(2P3/2) atoms, was located at 405.18±0.02 nm giving for the electron affinity Ea(I) =3.0591±0.0001 eV.
REFERENCES
1.
R. B.
Green
, R. A.
Keller
, G. G.
Luther
, P. K.
Schenek
, and J. C.
Travis
, IEEE J. Quantum Electron
QE‐13
, 63
(1977
).2.
J. E. M.
Goldsmith
and J. E.
Lawler
, Contemp. Phys.
22
, 235
(1981
), and references therein.3.
C. R. Webster and C. T. Rettner, Laser Focus (in press), and references therein.
4.
H. Massey, Negative Ions, 3rd ed. (Cambridge University, London, 1976).
5.
H.
Hotop
and W. C.
Lineberger
, J. Phys. Chem. Ref. Data
4
, 539
(1975
).6.
7.
D. A. Haner, C. R. Webster, P. H. Flamant, and I. S. McDermid (in preparation, 1982).
8.
C. T.
Rettner
, C. R.
Webster
, and R. N.
Zare
, J. Phys. Chem.
85
, 1105
(1981
).9.
J. G. Calvert and J. N. Pitts Jr., Photochemistry (Wiley, New York, 1966).
10.
11.
R. S.
Berry
, C. W.
Reimann
, and G. N.
Spokes
, J. Chem. Phys.
37
, 2278
(1962
).12.
13.
R. S. Berry and C. W. David, in Atomic Collision Processes, edited by M. R. C. McDowell (North‐Holland, Amsterdam, 1964), p. 543.
14.
Quoted in Ref. 4.
15.
16.
17.
18.
B.
Steiner
, M. L.
Seman
, and L. M.
Branscomb
, J. Chem. Phys.
37
, 1200
(1962
).19.
L. M. Branscomb and W. L. Fite, Phys. Rev. 93, 651A (1954).
20.
W. C.
Lineberger
and B. W.
Woodward
, Phys. Rev. Lett.
25
, 424
(1970
).21.
P. A.
Schultz
, R. D.
Mead
, P. L.
Jones
, and W. C.
Lineberger
, J. Chem. Phys.
77
, 1153
(1982
).22.
23.
24.
25.
D. R.
Lyons
, A. L.
Schawlow
, and G.‐Y.
Yan
, Opt. Commun.
38
, 35
(1981
).26.
C. R. Webster and R. T. Menzies (submitted for publication, 1982).
See also
Laser Focus
18
, 14
(1982
).
This content is only available via PDF.
© 1983 American Institute of Physics.
1983
American Institute of Physics
You do not currently have access to this content.
