A static trap capable of storing ions for many hours—electrons for over a month—bids fair to bring the convenience of the chemist's reagent shelf to the study of ions and their interactions. The trap to store heavy ions developed at the Joint Institute of Laboratory Astrophysics, shown on the cover and in figure 1, is preferable for our work to its older cousin, the radiofrequency trap, in that it does not feed energy into the system it contains. Its usefulness is further enhanced by a nondestructive detection technique. Thus ends the era when our knowledge of ions and their interactions depended exclusively on analysis of plasmas, laboratory and natural, or the cleaner method of colliding beams.

1.
A.
Burgess
,
Astrophys. J.
139
,
776
(
1964
).
2.
C. A.
Fenstermacher
,
M. J.
Nutter
,
W. T.
Leland
,
K.
Boyer
,
Appl. Phys. Lett.
20
,
56
(
1972
).
3.
R. A. Heppner, F. L. Walls, W. T. Armstrong, G. H. Dunn (submitted to Phys. Rev. A).
4.
A. V.
Phelps
,
Bull. Am. Phys. Soc.
18
,
1518
(
1973
).
5.
L. J.
Denes
,
J. J.
Lowke
,
Appl. Phys. Lett.
23
,
130
(
1973
).
6.
E.
Herbst
,
W.
Klemperer
,
Astrophys. J.
185
,
505
(
1973
).
7.
J.
Kaplan
,
Phys. Rev.
38
,
1048
(
1931
).
8.
J. N. Bardsley, M. A. Biondi in Advances in Atomic and Molecular Physics, Vol. 6, (D. R. Bates and I. Esterman, eds.), Academic, New York, 1970, page 1.
9.
B.
Peart
,
K. T.
Dolder
,
J. Phys. B
6
,
L359
(
1973
).
10.
M. K.
Vogler
,
G. H.
Dunn
,
Bull. Am. Phys. Soc.
15
,
417
(
1970
).
11.
G. Hagen, Air Force Cambridge Research Laboratory Report AFCRL‐68‐0649 (1968).
12.
W.
Paul
,
H.
Steinwedel
,
Z. Naturforsch.
8a
,
448
(
1953
).
13.
W.
Paul
,
M.
Raether
,
Z. Physik
140
,
262
(
1955
).
14.
H. G. Dehmelt in Advances in Atomic and Molecular Physics, (D. R. Bates and I. Esterman, eds.), Academic, New York, vol. 3, 1967, page 53
and vol. 5, 1969, page 109.
15.
F. M.
Penning
,
Physica
3
,
873
(
1936
).
16.
J.
Byrne
,
P. S.
Farago
,
Proc. Phys. Soc. (London)
86
,
801
(
1965
).
17.
H. G.
Dehmelt
,
F. L.
Walls
,
Phys. Rev. Lett.
21
,
127
(
1968
).
18.
L. Spitzer, Physics of Fully Ionized Gases, Interscience, New York, 1956, page 76.
19.
F. L.
Walls
,
T. S.
Stein
,
Phys. Rev. Lett.
31
,
975
(
1973
).
20.
A.
Stamatović
,
G. J.
Schulz
,
Rev. Sci. Instr.
41
,
423
(
1970
).
21.
F. L.
Walls
,
G. H.
Dunn
,
J. Geophys. Res.
79
,
1911
(
1974
).
22.
D.
Wineland
,
P. E.
Ekstrom
,
H. G.
Dehmelt
,
Phys. Rev. Lett.
31
,
1279
(
1973
).
23.
M. D.
McGuire
,
E. N.
Fortson
,
Bull. Am. Phys. Soc.
18
,
710
(
1973
).
24.
E. N.
Fortson
,
Bull. Am. Phys. Soc.
19
,
15
(
1974
).
25.
M. H.
Prior
,
Phys. Rev. Lett.
29
,
611
(
1972
).
26.
M. H.
Prior
,
H. A.
Shugart
,
Phys. Rev. Lett.
27
,
902
(
1971
).
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