Macroscopic two-dimensional (2D) images of flowing weakly magnetized lithium (Li+) ion beams are systematically presented. When the beam density approaches the Brillouin density limit, the 2D shape of the flowing Li+ ion beam deforms gradually. Also, the images clearly show not only the m = 1 shift mode but also higher modes of the flowing Li+ ion beams. These observed modes are analyzed by using a Fourier transform method.

1.
H.
Himura
,
Nucl. Instrum. Methods Phys. Res., Sect. A
811
, p.
100
(
2016
).
2.
L.
Brillouin
,
Phys. Rev.
67
, p.
260
(
1945
).
3.
R. C.
Davidson
,
Physics of nonneutral plasmas
(
Imperial College Press
London
,
2001
).
4.
R. W.
Gould
,
Phys. Plasmas
2
, p.
2151
(
1995
).
5.
R. G.
Greaves
,
M. D.
Tinkle
, and
C. M.
Surko
,
Phys. Rev. Lett.
74
, p.
90
(
1995
).
6.
M. D.
Tinkle
,
R. G.
Greaves
, and
C. M.
Surko
,
Phys. Plasmas
3
, p.
749
(
1996
).
7.
S.
Bhattacharyya
,
Phys. Plasmas
2
, p.
1077
(
1995
).
8.
S.
Kawai
,
H.
Himura
,
S.
Masamune
, and
J.
Aoki
,
Phys. Plasmas
23
, p.
022113
(
2016
).
9.
H.
Himura
, “
Recent experiments with lithium ion and electron plasmas in the bx-u linear trap
,” in this conference proceedings,
presented at Lawrence University
(
2017
).
10.
H.
Himura
,
S.
Yamada
,
T.
Kato
, and
S.
Masamune
,
Plasma and Fusion Research
12
, p.
1201037
(
2017
).
11.
S.
Yamada
,
H.
Himura
,
T.
Kato
,
S.
Okada
,
A.
Sanpei
, and
S.
Masamune
, “
Two-dimensional macroscopic shapes of lithium-ion and electron plasmas after elapse of two-fluid plasma state
,” in this conference proceedings, presented at
Lawrence University
(
2017
).
12.
H.
Himura
,
S.
Nakata
, and
A.
Sanpei
,
Rev. Sci. Instrum.
87
, p.
063306
(
2016
).
This content is only available via PDF.
You do not currently have access to this content.