Electromagnetic dynamics of blobs in hot scrape-off-layer plasmas of the tokamak are affected by excitation of the Alfvén waves and their subsequent propagation to the machine first wall along open magnetic field lines. In this study, the interaction of electromagnetic perturbations with the conducting tokamak wall and the resulting impact of these perturbations on the motion of filaments at the tokamak edge are analyzed. The model describing blob dynamics is presented. To describe the reflection of the Alfvén waves from the tokamak wall, the new form of sheath boundary conditions for the parallel current and electrostatic potential at the plasma–sheath interface is proposed. It is demonstrated that depending on the wall resistivity, the waves can be either absorbed or reflected by the wall, influencing the excitation of electromagnetic fluctuations inside the filament plasma. The theoretical conclusions of the study are supported with the BOUT++ numerical modeling of blob dynamics at the edge of the DIII-D and NSTX tokamaks. It is shown that taking the reflective boundary conditions into account leads to the excitation of the standing Alfvén waves in the filament, periodically canceling the electrostatic currents inside the blob.

1.
C.
Hidalgo
,
Plasma Phys. Controlled Fusion
37
,
A53
(
1995
).
2.
B. A.
Carreras
,
IEEE Trans. Plasma Sci.
25
,
1281
(
1997
).
5.
R.
Jha
,
S.
Mattoo
, and
Y.
Saxena
,
Phys. Plasmas
4
,
2982
(
1997
).
6.
J. A.
Boedo
,
D. L.
Rudakov
,
R. A.
Moyer
,
G. R.
McKee
,
R. J.
Colchin
,
M. J.
Schaffer
,
P.
Stangeby
,
W.
West
,
S. L.
Allen
,
T. E.
Evans
et al,
Phys. Plasmas
10
,
1670
(
2003
).
7.
Y.
Xu
,
S.
Jachmich
,
R.
Weynants
, and
TEXTOR Team
,
Plasma Phys. Controlled Fusion
47
,
1841
(
2005
).
8.
G.
Kirnev
,
V.
Budaev
,
S.
Grashin
,
E.
Gerasimov
, and
L.
Khimchenko
,
J. Nucl. Mater.
337
,
352
(
2005
).
9.
H.
Tanaka
,
N.
Ohno
,
N.
Asakura
,
Y.
Tsuji
,
H.
Kawashima
,
S.
Takamura
,
Y.
Uesugi
, and
JT-60U Team
,
Nucl. Fusion
49
,
065017
(
2009
).
10.
R.
Maqueda
,
D.
Stotler
,
S.
Zweben
, and
NSTX Team
,
J. Nucl. Mater.
415
,
S459
(
2011
).
11.
M.
Kočan
,
H.
Müller
,
B.
Nold
,
T.
Lunt
,
J.
Adámek
,
S.
Allan
,
M.
Bernert
,
G.
Conway
,
P.
de Marné
,
T.
Eich
et al,
Nucl. Fusion
53
,
073047
(
2013
).
12.
O.
Garcia
,
J.
Horacek
, and
R.
Pitts
,
Nucl. Fusion
55
,
062002
(
2015
).
13.
N.
Walkden
,
F.
Militello
,
J.
Harrison
,
T.
Farley
,
S.
Silburn
, and
J.
Young
,
Nucl. Mater. Energy
12
,
175
(
2017
).
14.
L.
Wang
,
G.
Tynan
,
R.
Hong
,
L.
Nie
,
Y.
Chen
,
R.
Ke
,
T.
Wu
,
T.
Long
,
P.
Zheng
,
M.
Xu
et al,
Phys. Plasmas
26
,
092303
(
2019
).
15.
S. I.
Krasheninnikov
,
Phys. Lett. A
283
,
368
(
2001
).
16.
S.
Krasheninnikov
,
D.
D’Ippolito
, and
J.
Myra
,
J. Plasma Phys.
74
,
679
(
2008
).
17.
D.
D'Ippolito
,
J.
Myra
, and
S.
Zweben
,
Phys. Plasmas
18
,
060501
(
2011
).
18.
D.
Hoare
,
F.
Militello
,
J.
Omotani
,
F.
Riva
,
S.
Newton
,
T.
Nicholas
,
D.
Ryan
, and
N.
Walkden
,
Plasma Phys. Controlled Fusion
61
,
105013
(
2019
).
19.
A.
Stepanenko
,
Phys. Plasmas
27
,
092301
(
2020
).
20.
A.
Stepanenko
,
Plasma Phys. Rep.
47
,
1
17
(
2021
).
21.
W.
Lee
,
J. R.
Angus
,
M. V.
Umansky
, and
S. I.
Krasheninnikov
,
J. Nucl. Mater.
463
,
765
(
2015
).
22.
W.
Lee
,
M. V.
Umansky
,
J.
Angus
, and
S. I.
Krasheninnikov
,
Phys. Plasmas
22
,
012505
(
2015
).
23.
A.
Stepanenko
,
Plasma Phys. Rep.
48
,
462
(
2022
).
24.
J.
Myra
and
H.
Kohno
, in
26th IAEA Fusion Energy Conference, Kyoto, Japan
(IAEA Publishing Section, 2016), p. TH/P4-31.
25.
J.
Myra
and
H.
Kohno
,
Phys. Plasmas
26
,
052503
(
2019
).
26.
V.
Rozhansky
,
E.
Kaveeva
, and
M.
Tendler
,
Plasma Phys. Controlled Fusion
57
,
115007
(
2015
).
27.
D.
D'Ippolito
and
J.
Myra
,
Phys. Plasmas
13
,
102508
(
2006
).
28.
J.
Myra
,
D.
D'Ippolito
,
D.
Russell
,
L.
Berry
,
E.
Jaeger
, and
M.
Carter
,
Nucl. Fusion
46
,
S455
(
2006
).
29.
L.
Colas
,
J.
Jacquot
,
S.
Heuraux
,
E.
Faudot
,
K.
Crombé
,
V.
Kyrytsya
,
J.
Hillairet
, and
M.
Goniche
,
Phys. Plasmas
19
,
092505
(
2012
).
30.
J. R.
Myra
and
D. A.
D'Ippolito
,
Phys. Plasmas
22
,
062507
(
2015
).
31.
M.
Elias
,
D.
Curreli
,
T.
Jenkins
,
J.
Myra
, and
J.
Wright
,
Phys. Plasmas
26
,
092508
(
2019
).
32.
M.
Usoltceva
,
R.
Ochoukov
,
W.
Tierens
,
A.
Kostic
,
K.
Crombé
,
S.
Heuraux
, and
J.
Noterdaeme
,
Plasma Phys. Controlled Fusion
61
,
115011
(
2019
).
33.
W.
Zhang
,
R.
Bilato
,
V. V.
Bobkov
,
A.
Cathey
,
A.
Di Siena
,
M.
Hoelzl
,
A.
Messiaen
,
J. R.
Myra
,
G. S.
López
,
W.
Tierens
et al,
Nucl. Fusion
62
,
075001
(
2022
).
34.
J.
Myra
,
J. Plasma Phys.
87
,
905870504
(
2021
).
35.
R.
Barnett
,
D.
Green
,
C.
Waters
,
J.
Lore
,
D.
Smithe
,
J.
Myra
,
C.
Lau
,
B.
Van Compernolle
, and
S.
Vincena
,
Phys. Plasmas
29
,
042508
(
2022
).
36.
J.
Myra
and
D.
D'Ippolito
,
Phys. Plasmas
17
,
102510
(
2010
).
37.
A. K.
Ram
,
K.
Hizanidis
, and
Y.
Kominis
, in
EPJ Web of Conferences
(
EDP Sciences
,
2012
), Vol. 32, p.
01003
.
38.
A. K.
Ram
,
K.
Hizanidis
, and
Y.
Kominis
,
Phys. Plasmas
20
,
056110
(
2013
).
39.
A. K.
Ram
and
K.
Hizanidis
,
Phys. Plasmas
23
,
022504
(
2016
).
40.
Z. C.
Ioannidis
,
A. K.
Ram
,
K.
Hizanidis
, and
I. G.
Tigelis
,
Phys. Plasmas
24
,
102115
(
2017
).
41.
A.
Papadopoulos
,
E.
Glytsis
,
A.
Ram
,
S.
Valvis
,
P.
Papagiannis
,
K.
Hizanidis
, and
A.
Zisis
,
J. Plasma Phys.
85
,
905850309
(
2019
).
42.
W.
Tierens
,
W.
Zhang
,
J.
Myra
, and
E. M.
Team
,
Phys. Plasmas
27
,
010702
(
2020
).
43.
W.
Tierens
,
W.
Zhang
,
P.
Manz
,
E. M.
Team
, and
A. U.
Team
,
Phys. Plasmas
27
,
052102
(
2020
).
44.
W.
Zhang
,
W.
Tierens
,
M.
Usoltceva
,
ASDEX Upgrade Team
, and
EUROfusion MST1 Team
,
Nucl. Fusion
60
,
036010
(
2020
).
45.
W.
Zhang
,
W.
Tierens
,
V.
Bobkov
,
A.
Cathey
,
I.
Cziegler
,
M.
Griener
,
M.
Hoelzl
,
O.
Kardaun
,
ASDEX Upgrade Team
, and
EUROfusion MST1 Team
,
Nucl. Mater. Energy
26
,
100941
(
2021
).
46.
B.
Biswas
,
S.
Shiraiwa
,
S.-G.
Baek
,
P.
Bonoli
,
A.
Ram
, and
A. E.
White
,
J. Plasma Phys.
87
,
905870510
(
2021
).
47.
A.
Papadopoulos
,
E.
Glytsis
,
A.
Ram
, and
K.
Hizanidis
,
J. Plasma Phys.
87
,
855870401
(
2021
).
48.
L.
Colas
,
W.
Tierens
,
J.
Myra
, and
R.
Bilato
,
J. Plasma Phys.
88
,
905880614
(
2022
).
49.
W.
Tierens
,
J.
Myra
,
R.
Bilato
, and
L.
Colas
,
Plasma Phys. Controlled Fusion
64
,
035001
(
2022
).
50.
D. N.
Smithe
,
Phys. Plasmas
14
,
056104
(
2007
).
51.
T. G.
Jenkins
,
T. M.
Austin
,
D. N.
Smithe
,
J.
Loverich
, and
A. H.
Hakim
,
Phys. Plasmas
20
,
012116
(
2013
).
52.
D. N.
Smithe
,
D. A.
D'Ippolito
, and
J. R.
Myra
,
AIP Conf. Proc.
1580
,
89
96
(
2014
).
53.
J. R.
Angus
and
M. V.
Umansky
,
Phys. Plasmas
21
,
012514
(
2014
).
54.
D.
Farina
,
R.
Pozzoli
, and
D.
Ryutov
,
Nucl. Fusion
33
,
1315
(
1993
).
55.
J.
Myra
,
D.
Russell
, and
D.
D'Ippolito
,
Phys. Plasmas
13
,
112502
(
2006
).
56.
N.
Bisai
and
P.
Kaw
,
Phys. Plasmas
25
,
012503
(
2018
).
57.
D.
Schwörer
,
N. R.
Walkden
,
B. D.
Dudson
,
F.
Militello
,
H.
Leggate
, and
M. M.
Turner
,
Nucl. Fusion
60
,
126047
(
2020
).
58.
A.
Thrysøe
,
V.
Naulin
,
A.
Nielsen
, and
J.
Juul Rasmussen
,
Phys. Plasmas
27
,
052302
(
2020
).
59.
A. N.
Simakov
and
P. J.
Catto
,
Phys. Plasmas
10
,
4744
(
2003
).
60.
A.
Stepanenko
,
W.
Lee
, and
S.
Krasheninnikov
,
Phys. Plasmas
24
,
012301
(
2017
).
61.
J.
Myra
,
D.
D'Ippolito
,
D.
Stotler
,
S.
Zweben
,
B.
LeBlanc
,
J.
Menard
,
R.
Maqueda
, and
J.
Boedo
,
Phys. Plasmas
13
,
092509
(
2006
).
62.
J. R.
Angus
,
S. I.
Krasheninnikov
, and
M. V.
Umansky
,
Phys. Plasmas
19
,
082312
(
2012
).
63.
H.
Kohno
and
J.
Myra
,
Phys. Plasmas
26
,
022507
(
2019
).
64.
P. C.
Stangeby
,
The Plasma Boundary of Magnetic Fusion Devices
(
Institute of Physics Publishing
,
Philadelphia, PA
,
2000
), Vol.
224
.
65.
A.
Kirk
,
B.
Koch
,
R.
Scannell
,
H.
Wilson
,
G.
Counsell
,
J.
Dowling
,
A.
Herrmann
,
R.
Martin
,
M.
Walsh
et al,
Phys. Rev. Lett.
96
,
185001
(
2006
).
66.
J.
Neuhauser
,
V.
Bobkov
,
G.
Conway
,
R.
Dux
,
T.
Eich
,
M.
Garcia-Munoz
,
A.
Herrmann
,
L.
Horton
,
A.
Kallenbach
,
S.
Kalvin
et al,
Nucl. Fusion
48
,
045005
(
2008
).
67.
V.
Bulanin
,
V.
Gusev
,
N.
Khromov
,
G.
Kurskiev
,
V.
Minaev
,
M.
Patrov
,
A.
Petrov
,
M.
Petrov
,
Y. V.
Petrov
,
D.
Prisiazhniuk
et al,
Nucl. Fusion
59
,
096026
(
2019
).
68.
P.
Copil
,
Y.
Voitenko
, and
M.
Goossens
,
Astron. Astrophys.
478
,
921
(
2008
).
70.
T.
Van Doorsselaere
,
A. K.
Srivastava
,
P.
Antolin
,
N.
Magyar
,
S.
Vasheghani Farahani
,
H.
Tian
,
D.
Kolotkov
,
L.
Ofman
,
M.
Guo
,
I.
Arregui
et al,
Space Sci. Rev.
216
,
140
(
2020
).
71.
N.
Mattor
and
R. H.
Cohen
,
Phys. Plasmas
2
,
4042
(
1995
).
72.
V.
Pilipenko
,
N.
Mazur
,
E.
Fedorov
,
M.
Engebretson
, and
D.
Murr
,
J. Geophys. Res.
110
,
A10S05
, https://doi.org/10.1029/2004JA010755 (
2005
).
73.
D.
Ryutov
and
R.
Cohen
,
Contrib. Plasma Phys.
44
,
168
(
2004
).
74.
A.
Aydemir
,
Phys. Plasmas
12
,
062503
(
2005
).
75.
B.
Dudson
,
M.
Umansky
,
X.
Xu
,
P.
Snyder
, and
H.
Wilson
,
Comput. Phys. Commun.
180
,
1467
(
2009
).
76.
A. C.
Hindmarsh
,
P. N.
Brown
,
K. E.
Grant
,
S. L.
Lee
,
R.
Serban
,
D. E.
Shumaker
, and
C. S.
Woodward
,
ACM Trans. Math. Software
31
,
363
(
2005
).
77.
A.
Hasegawa
and
L.
Chen
,
Phys. Fluids
19
,
1924
(
1976
).
78.
J.
Myra
,
J.
Boedo
,
B.
Coppi
,
D.
D'Ippolito
,
S.
Krasheninnikov
,
B.
LeBlanc
,
M.
Lontano
,
R.
Maqueda
,
D.
Russell
,
D.
Stotler
et al, in
21st IAEA Fusion Energy Conference
(
2006
).
79.
J.
Cheng
,
J.
Myra
,
S.-H.
Ku
,
R.
Hager
,
C.-S.
Chang
, and
S.
Parker
, arXiv:2302.02877 (
2023
).
80.
J.
Myra
,
D.
D'Ippolito
,
S.
Krasheninnikov
, and
G.
Yu
,
Phys. Plasmas
11
,
4267
(
2004
).
You do not currently have access to this content.