核融合科学研究所dpc.nifs.ac.jp/amdsoc/kado.pdf²@ 812 Ï=³>e©¥³$Ð *u #f

18
1 !"#$%&’()*+,&!- !"#$%&’()*+,-. 0 123 ./ 012!"#$%&34’( 5/ ’(&6789:;<+’="> ?/ 34’(#AB$CDEFGH’= I/ #AB$CDEFGHJKLJMN+ O/P+Q 2006.08.24 )*45678%&’(9:%&’(%;+<=>- %&’(?@ABCD- E(NIFS) The Univ ersity of Toky o ’(&S(TUVWXYVZ%[\]^\_‘P a]b+J]cPdefgh ij_‘aM*kel[mgno\pqrstM uvY]M+w_pPdh 2 012!"#$%&34’(+,&!- x"yz{|y}y)*Y~M34(&6789: i :YwM!"#$&&& zy( i ™!"#$&( y!"#$YwM34y)* H ! ¡(¢£/&¥ƒ

Upload: others

Post on 29-Jan-2021

0 views

Category:

Documents


0 download

TRANSCRIPT

  • 1

    !"#$%&'()*+,&!-

    !"#$%&'()*+,-.///0/123

    ./ 012!"#$%&34'(5/ '(&6789:;

  • 3

    !"#$+®+¯°±²d³´&µe¶·¸¹yºg

    Te

    ne

    Particle/

    Heat Flux

    Gas

    Density

    ~50eV~10eV

    ~1eV

    Separatrix Divertor Plate

    !"#$

    H2,CH

    4 %&Ne,Ar %&

    »¼½¾Y~M³´&µ¿®À&ÁÂÃÄ&Å]ÆÇÈ

    Molecular Assisted Recombination

    (MAR) '()*+ v ! 4,-.

    /012345678'9:;00 ?@

    H2(v) + e ->0H2- -> H- + H

    H- + H+ ->H + H*

    H2(v) + H+ ->0H2

    + + H

    H2+ + e ->H + H*

    IC

    DR

    DA

    MN

    (1)

    (2)

    É'(»¼½¾YcÊËÌqM'(ÍεÏ()*пÑ+

    Ò¾ÓÔÓÔ

    Õ(yÏ,-*Ð

    '(ÍεÏ()*Ð

    4

    §¨Y©ªdM«k¬

    !" #$%&'(&

    )*#+

    )* #)*

    )* #))

    )* #)"

    )* #),

    -./.01

    * ) " ,

    2$%&

    2'(&2345 6!"7

    2345 6!.7

    89,:; 5.

  • 5

    Ö×2.ØÙS&S(TUÚÛÜ

    !

    1

    rot

    1

    sin"

    #

    #"sin"

    #

    #"

    $

    % &

    '

    ( ) +

    1

    sin2"

    # 2

    #* 2+ , -

    . / 0 rot =

    1

    vib

    h2

    #

    #r

    $

    % &

    '

    ( ) 2

    1V (r) + E+ , -

    . / 0 vib =

    h2J(J +1)

    2µr2

    .kÝ*Þeß/g%Vàáâãäh

    ÙåÝ*ÞeæÙgVVçè鲯êë[ìÕ(

    &Æíî¶ïy»:Ý*Þ&%+[\ðKqMñÁòóyÆô8h

    õ('(&Æíî¶ïy»:Ý*Þ&ö'²eæÙ{ß/g

    !

    !

    Erot

    =h2J(J +1)

    2µr2

    rot =YJM(",#)

    ß/6789:34(÷ø`S(TU~ch

    ß/ùÙä&úûÎVàáâãäY~Mh

    ü8y{·ýyþ$:(BO)ÿ!

    eñÁÿ!gRç&ØÙ¯+Q\hÕ(&"#¯"$`,%[\j±ì&%&ç&ØÙ¯'QMRæÙß/ØÙR(R1~10 ps Õ(&ØÙRRR(R0.1-1 fs

    6

    '(&6789:;<

    !

    H = H0

    + HSO

    + HB

    +L

    !

    " = elecvib

    rrot

    " Hel " = Eel (R)

    v Hvib v =#e (v +1/2) $#e%e (v +1/2)2

    +#e ye (v +1/2)3

    +L

    rot Hrot rot = BvJ(J +1) $DvJ2(J +1)

    2+ HvJ

    3(J +1)

    3

    )*Ù&'(þ+8º¤,y(Õ(-+æÙ-.ß/-)

    !

    H0

    = Hel

    + Hvib

    + Hrot

    Hel

    = Tel(r) +V (r,R)

    /0¯+^*Ù

    !

    Bv

    = Be"#

    e(v +1/2) + $

    e(v +1/2)

    2+L

    Dv

    = De

    + %e(v +1/2) +L

    ü8y{·ýyþ$:(BO)ÿ!2ñÁÿ!

    '(ë2¶:1:¼~c

    ñÁòóyÆô82¢ea^PjBOÿ!&3g

    4§ß/ 56TY~M78

    âãæÙ( Morse9

    ¼:y:;<

    =:$y

  • 7

    þ+8º¤,y&ú.µ+Vm

    !

    H" = E"

    H11

    H12

    H21

    H22

    #

    $ %

    &

    ' ( "1

    "2

    #

    $ %

    &

    ' ( =

    E1

    0

    0 E2

    #

    $ %

    &

    ' ( "1

    "2

    #

    $ %

    &

    ' (

    ABCDEFGHI2JKLMNOP;QRSTUVWXI2'YZ'[\]^;_'==I2`abcdABCDEFG'[\]^He?U+fgehijkjWXI2'[\]^'$lmZ,nopU;,V?KI2qPirSsWtuCvw`xy?z{+|}'~!OHW2]^`xy?z{+'2]^'$lmZ'^`xy?z{H,V?i0I2JU;,>W[\]^`',WdABCDEFG`~!Oo?EwN|}`xyW[\[\DC`xy?pU;,V?i

    ABCDEFG`|}njTUVW[\+tuCvw`W_'UV'[\DC;K2]^P`noi

    '(&6789:;]?c@pV`*ÙAY~Mh

    Õ(-&³ú. '2:RBÕÚ*Ù

    æÙ-&³ú. '2:R³ñÁòóyÆô8`

    ß/-&³ú. '2:Rß/*Ù

    Cl-R2:R¼:y:;

  • 9

    '(&'=">

    n2S+1LJ

    [XABCD.....abcd....]2S+1!+/"#(g/u)

    '(2

    LVZpS(jV]p

    '(2[c¯\]ØÙ

    #=!+"!

    S

    NR

    Hund’s case (b)

    N=R+!

    J=N+S

    "

    Hund’s case(a)

    #=!+"

    J=#+R

    L = 0, 1, 2, 3, 4 ,,,,

    -2S, P, D, F, G....

    ! = 0, 1, 2, 3, 4 ,,,,

    -2", $, %, &, '....

    Õ(GH;<

    GH+÷^_Uk

    `]M_Uk

    S

    UÚYV`]Mcasej_GH&ö

    a¯btr÷¡Y]Mh

    iClebsh-Gordan¬, Wigner symbol

    (

    '(

    ¼:y_Uk

    2S+1: ¼:y_Uk

    cdÎ

    10

    eóï`Æy¹º:

    |el> &úûÎ

    fõ('({{'(2¯ghij&áklYmp\`RR"=0e#-g{{nö(op+)Jq>r/(op-)JpsqJRR"9õU-&&`3Ý¿(op+)_%3Ý¿(op-)

    f¡çõ('({{dt\&Õ(¯4Yä[\r/dM+±hRR|el> &q>¿JLK]pRc"#(even) = g (gerade) q>¿JLMR d"#(odd) = u (ungerade)

    #g, $u¡

    |el> +|rot>j±PM

    |rot>=YJM(%,&)~c`uvr/Ymp\VJw+YSTdMhJ=0jVnöh

    uvr/=z2ß/(|el>nö)i'(2¯ghár/x(cJ)op+/- +÷^

    ¡çõ('(&çSaeyX(4r/iÕ(&84r/gYmp\

    |el> |rot>R&q>nöRiRsym. RR{(+) , g } {(-), u }

    RRRRRRq>r/Ri@antisym. RRzXY

    e-parity : (-1)J f-parity -(-1)J j{|dM"A_

  • 11

    34'(#AB$CDEFGH&æÙß/}~

    12

    Õ(ÏÒ¾Ð&æÙß/}~

    (n’, v’, J’) iÏn”, v”, J”)

    !

    I = h" # $ N A $ n % $ $ n

    A $ n % $ $ n = 2.026 &10'6" 3

    $ n $ v $ J µe$ $ n $ $ v $ $ J

    2

    2 $ J +1

    $ n $ v $ J µe$ $ n $ $ v $ $ J

    2

    = $ v $ n µe$ $ n $ $ v

    2

    $ J $ $ J 2

    = $ v Re(r) $ $ v

    2

    $ J $ $ J 2

    !

    " v Re (r) " " v 2

    = Re2(r " v , " " v ) " v " " v

    2

    = Re2(r " v , " " v )q " v , " " v

    Õ(£:¹yº&öµ¿”J”]&`

    !

    A " n # " " n =$%3Re2q " v " " v

    S " J " " J

    2 " J +1

    S " J " " J " J

    & = 2 " J +1

    q " v " " v " v " " v

    & =1 Franck-Condon (

    Hönl-London (

    P(branch) J’-J”=-1

    Q(branch) J’-J”=0

    R(branch) J’-J”=+1

  • 13

    34'(Ë{=)*&æÙß/}~

    hijklmnoVUVp

  • 15

    z;

  • 17

    5x10-3

    4

    3

    2

    1

    0

    Sig

    na

    l in

    ten

    sit

    y[a

    rb.

    un

    it]

    660640620600Wavelength [nm]

    Q

    R

    (0-0)P

    (1-1)P

    (2-2)P(3-3)P

    1 5 1 5 1 5 1 5 1 5 1 1(0-0) (1-1) (2-2) (3-3) (4-4) (5-5) (6-6)

    4 0 4 0 4 0 3 0

    2 6

    2 6

    2 6

    2 5

    J''

    (0-0) (1-1)

    !H

    (b)

    1m-Czerny-Turner (2400 G/mm), PMT(Hamamatsu R928)

    Wavelength resolution(FWHM) < 0.03 nm @50 µm slit

    #AB$CDE@89¥:@;¦D$§E9

    18

    !

    RX ,vd,v'"qvv'

    X #dexp{

    #Ev(0) + Ev(v)

    kTe}

    tukl×¹ØÙÚBÊ˱Á,ÌÍ®ÚBÛÜsÝÞ8(MAR)

    ØÙÚB9:@ßhoFulcher-!²,àF-CAðÍüý¹¼ã

    case: d -> a : G Staszwska 1999

    case: X -> d: Meneses, 1995

    ÃBkl¡¢@ÈÉkl2þÆÇÿ!¼ã

    X1"+g

    d3#-u

    a3"+g

    !

    Aa,v"d,v '"qvv '

    d# a

    !

    R2(X " d) = Re

    2#qvv'X "d

    # SJJ 'X" d

    Ãklòó®vw".#,î$%ª&'()*ã

    Ã

  • 19

    #B9¥$¨F¼(G Staszwska 1999)

    Fulcher-!@vw".#,Re(r)

    '"kg#«xy?¬$;?@

    Franck-Condon¡¢`:j

    TYZ' *(F-C®8)U¯°`|±@

    ²%³´ *@@)^@±@@@:?$AF9?"²RÏ=³>E©¥³$Ð

  • 21

    The comparison of qv’v” / R2 for d3$u – a

    3"g

    .268/.43261%

    .555/.64386%

    .154/.117137%

    .015/.006250%

    v'=3

    .003/.00743%

    .204/.32363%

    .671/.74390%

    .115/.08144%

    v'=2

    .137/.21364%

    .79/.8494%

    .064/.04160%

    v'=1

    .069/.10566%

    .93/.93100%

    v'=0

    v"=4v"=3v"=2v"=1 v"=0 ad

    2¦§¨'Schrödinger§©ª'^"+µ¶·¸@

    Franck-Condon®8+ Spindler(1971)'¹wHº»o?@

    ./vw£@01»¼®23@45î678mnÜ*9

    Ó./ÍÚ@5":

    @:?$AF9?"²@812Ï=³>E©¥³$Р*U#F

  • 23

    #AB$CDEFG!-&·¸

    24

    :¹º»¼()@F--Y~M½¾

    ;j: %&'(?6'ABÚBCDî·@'ã

    Arc discharge: 70-100V, 30-45AB = 0.02Tne ~ 2x10

    12 cm-3, Te ~ 0.05-15 eVTi ~ 0.5 eV (@target chamber)

    5uAB: on--> -CDEÉ off --> F-CDmn

    MAP-II

  • 25

    ¿:ÀÁ:}: Õ@2%Î(ÂÃ&¥¦¯8M

    Discharge Condition:

    230-270 V, 70 mA, 20-3000 Pa(300 Pa in this work)

    ne~109 cm-3, Te = 2-5 eV

    26

    !

    Ia " " v " " J d " v " J

    =hc

    #a " " v " " J d " v " J

    Aa " " v " " J d " v " J

    Aa " " v " " J d " v " J

    v",J "

    $% ne RXvJ

    dv 'J 'Cv (2J +1)gas

    Jexp &

    FX (J,v)

    kTrotX

    &GX (v) &GX (0)

    kTvibX

    '

    ( )

    *

    + ,

    - . /

    0 1 2 v,J

    $

    #AB$CDEF!Ï:?$!"#AF9?#²ÄÐ@Å©E@§CD@A.#²

    ÄÏ=ÆBÐ@ÇD9ÈAEDÇD¥§

    !

    RX ,vJ

    d ,v'J 'N

    vJ

    X{ }J

    "v

    " = Nv'J 'd Ad ,v'J 'a,v"J "J '

    "•d GQX :

    •d ÊQa¦

    !

    Id ,v 'J '

    a,v"J"= h" # A

    dv 'J '

    av"J"N

    vJ

    d

    Assuming X(vJ) is characterized by Boltzmann Tvib,Trot

    !

    Nv'JX

    = Cv (2J +1)gasJexp "

    FX (J,v)

    kTrotX

    "GX (v) "GX (0)

    kTvibX

    #

    $ %

    &

    ' (

    measurement Reliable database required Fitting Parameter

    X1#+g

    d3$-u

    a3#+g

    Coronal

    equilibrium

    spin-changed

    Fulcher)(

    !

    RXvJdv'J '

    = qXvdv'

    < Qv '"vGryzinski

    ve > a0J1J '#

    gas

    g'as

    a$K$ 'K '

    K '

    % =K '

    % Q r' (2K '+1)K '

    $'

    r

    $ & $'

    K

    &$

    '

    ( )

    *

    + ,

    r

    %2

    =1

    Multi-polar Q’r=1-4 :{0.76, 0.122, 0.1, 0.014}.

    r = 1 ---> dipolar = Hönl-London factor

    Excitation rate (adiabatic)

    !

    SJ 'J "

    Q=

    2J '+1

    2,

    SJ 'J "

    P+ S

    J 'J "

    R=J'

    2+J '+1

    2=

    2J'+1

    2

    Radiative transition ratio

    Hönl-London factor

    P,RHHLÅ伦Anomaly

  • 27

    !

    "eH2

    (Te) : e +H

    2(v)# H

    2

    -( )*

    #H +H$

    "eH$(Te ) : e +H

    $ # e + e + H

    "H+H$(Ti) : H

    ++H

    $#H + H

    *

    Ï.Ð#AB$CDEG!-Y~Myk&Éë[µ, ÊË]

    !

    0 =d H

    "[ ]dt

    = ne

    H2(v)[ ]#eH2

    0$v$9

    % " H"[ ](ne#eH" + H+[ ]#H+H") "H

    "[ ]&

    transport

    !

    H2(v)[ ] = N0 exp "G(v) "G(0)

    kTvib

    #

    $ %

    &

    ' (

    Tvib : Fulcher-band spectroscopy

    Te¦/double probene¦/double probe[H-] ¦Laser photodetachmentdeg. dissociation¦H-H2 intensity ratio

    =ne

    dissociative attachment (DA)

    e-impact electron detachment00

    mutual neutralization ( = NI-MAR)

    vibrational distribution of H2

    depletionproduction

    We first discuss w/o transport.

    QcIPIZJQ_bKZbLQMGONOPRMOLPQcQQIWHSSQRSQGHRKIePTZQQSOUQdaXP\QMOMOSHRMOL

    28

    Ï5ÐC©ÈÈFD=D¥§@Ì@¦C©§©¥

    !

    H2" Loss" events

    H# " photon=$ H

    2" Loss( )

    % H#( )=

    ne[H2](S + D+ CX + DA )

    ne[H2](X1&3diss + FX

    1&3

    dir)B H#( )

    !

    H2" Loss" events

    Fulcher " photon=# H

    2" Loss( )

    $ H2(d% a)( )

    =ne[H2](S + D+ CX + DA )

    ne[H2]Xd&X (Te )

    !

    " H2(d# a)( )" H$( )

    =Xd%X (Te )

    X1#3

    diss(T

    e)B(H$ )

    H!YTÛÌqM(¼ýzº8&'(&©ª

    §ÍY½[\^M((H{'((H2= )(H:H!), )(H2:H!), )(H2:Fulcher-!)

    ÎRkÏ&ÐF

    ÃkÑÒ : Õ¡Ywp\RkÏJKTe¯ðMÈF=0

    F=[H]/[H2]

    !

    " H#( )" H$( )

    =(X

    1%4

    diss + FX1%4

    dir)B H#( )

    (X1%3

    diss + FX1%3

    dir)B H$( )

    F!-Ókj%²Ë¿Ì^]M+Ôk¿ÕÖM

  • 29

    Ï?ÐGDÄG5໼!"#$&%²ke()@F--gFµH

    !

    " H#( )" H2(d$ a)( )

    =ne[H]X1$6

    eff(ne,Te )B(H# )

    ne[H2]Xd%X (Te )F/(2+F)%²k

    F=[H]/[H2]Kado et. al., Journal of Nuclear Materials 337-339 (2005)116.

    ·Ø2He!"#$3.1 mTorrYH2»¼¯exene

  • 31

    ÏOÐæÙk{ß/k&âè'e¢¨'Sg[µ]

    6

    5

    4

    3

    2

    1

    0

    Te [

    eV

    ]

    -4 -2 0 2 4Position [cm]

    3

    2

    1

    0

    ne [1

    0-1

    1 cm

    -3 ]

    Te

    en

    (3.8mTorr)

    4000

    3000

    2000

    1000

    0

    Tv

    ib [

    K]

    -4 -2 0 2 4Position [cm]

    800

    600

    400

    200

    0

    Tro

    t [K]

    Tvib

    Trot

    (3.8mTorr)

    Ð5678'ÑÒÇ [ÓÔ¼ 1 km/s]/[ÕÖ 10 cm] = 100's

    Ð1234×7Ø'6Ù©'ÈÚÇ 1/[H2,ne] ~ 10 ms

    ÛÜÅÆ(X)'1234+ºÝ'+Þß

    àáÅÆ'âã+40 ns ©¼

    0/_'Y'äå,?@

    à12347Á;æCçèG7Á,éǺÝ,>WTe;ºÝ,ehUhêehKëìP/íTe'¿9H&'@

    Tvib@ÓÕVWÜo§$¾Úìp@mnÜîXY×8ã

    4000

    3000

    2000

    1000

    0

    Tv

    ib [

    K]

    -4 -2 0 2 4Position [cm]

    800

    600

    400

    200

    0

    Tro

    t [K]

    Tvib

    Trot

    !"#$%&'%(#)*+,-./

    32

    col

    colpre

    4'

    30'

    exp

    fit

    KA

    KDA

    N

    Nf

    v

    v

    X

    +

    ++==!

    =

    "=

    #

    #

    pre

    col

    1

    1

    D

    KA

    f

    +=

    !

    16.7

  • 33

    %56&'(è )*¾56+Z&'(è

    , 16.7nsîï

    Ð 19.0nsîï

    ! îïej

    !8ÛÜ'12-(.¼kg/´

    0

    ¿À0

    Kcol`X),V?MAP-II'12&'(èHîï^`34

    56

    78w9:w;¿À

    TvibX=3945[K]

    TvibX=2044[K]Tvib

    X=1693[K]

    TvibX=4871[K]

    æç¬&£I[äå`µ]

    * D. Yamasaki, S. Kado et

    al., J. Phys. Soc. Jpn. 75

    044501 (2006).

    34

    P+Q

    Ð5678'1234+WG?£W@ûAG`BCT×mZHû?¹"D'E£Hû¤WFGkgHIJHK>´T&'(è'ÓL1MHNo?OÚ;?@

    Ð)þÿ'Fulcher-!P(QQ)+*9;RS,?T+;?@

    à¹ww÷+UUVjh;W@@WXYZehÎÏ[;\SsVsh?i

    ÐFulcher-!P(P,Q,RQ)'7å+]^'Ý_e)4'OÚ`\jsh?i

    èé&êë

    Ð78'34`¹CUFulcherPU'¯°

    ÐaÓbcÚKdThóeö÷'fÒP',gWéÇhi'j´@

    Ð-ékl÷mDC(Lyman, WernerP)U'¯°en

  • 35

    ìsíî

    [-] S. Kado, Y. Iida, S. Kajita, D. Yamasaki, A. Okamoto, B. Xiao,

    T. Shikama, T. Oishi and S. Tanaka,

    “Diagnostics of Recombining Plasmas in Divertor Simulator MAP-II” (Review)

    J. Plasma Fusion Res. 81, 810 (2005) .

    [-] S. Kado, S. Kajita, D. Yamasaki, Y. Iida, B. Xiao, T. Shikama, T. Oishi, A. Okamoto and S. Tanaka

    “Experimental study of negative ion profiles in H2-MAR plasmas in divertor simulator MAP-II”

    J. Nucl. Mater. 337-339, 166-170 (2005).

    [-] B. Xiao, S. Kado, S. Kajita and D. Yamasaki,

    “Rovibrational distribution determination of H2 in low temperature plasmas by Fulcher-! band spectroscopy” Plasma Physics and Controlled Fusion 46, 653-668 (2004).

    [-] !"#$% &'()*+,-./012324 56!7819:23;?5@ -./0A'()BCD80, 749-756E2004F

    [-] !"#$GHIJKGLMNOGP"Q, &9:23FulcherRS4TUVWP,RX1YZ[@\]^%_(8), (15) -./0A'()BCD80, 783-791(2004).

    [-] B. Xiao, S. Kado, S. Kajita, D. Yamasaki and S. Tanaka,

    “Rovibrational distribution of H2 in low temperature plasma: the dependence on plasma parameters”

    J. Nucl. Mater. 337-339, 1082-1086(2005) .

    [-] S. Kado, D. Yamasaki, B. Xiao, Y. Iida, A. Okamoto, S. Kajita, T. Shikama and S. Tanaka,

    “On the Anomalous Characteristics in the P and R Branches in a Hydrogen Fulcher Band”

    J. Plasma Fusion Res. SERIES, 7, 54 (2006) .

    [-] Daisuke Yamasaki, Shinichiro Kado, Bingjia Xiao, Yohei Iida, Shin Kajita and Satoru Tanaka,

    “Experimental Evaluation of Predissociation Rate in v = 4 State Usable for Analysis of H2 Fulcher-”

    J. Phys. Soc. Japan, 75, 044501 (2006).