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Investigation of the core-halo structure of the neutron-rich nuclei $^6$He and $^8$He by intermediate-energy elastic proton scattering at high momentum transfer

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(1)Investigation of the core-halo structure of the neutron-rich nuclei 6He and 8He by intermediate-energy elastic proton scattering at high momentum transfer Farouk Aksouh. To cite this version: Farouk Aksouh. Investigation of the core-halo structure of the neutron-rich nuclei 6 He and 8 He by intermediate-energy elastic proton scattering at high momentum transfer. Nuclear Theory [nucl-th]. Université Paris Sud - Paris XI, 2002. English. �tel-00006027�. HAL Id: tel-00006027 https://tel.archives-ouvertes.fr/tel-00006027 Submitted on 7 May 2004. HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés..

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(62). α. 6,8.

(63). He. ±. ±. . . 1. ∼ 1 GeV. . 

(64). R. a. .

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(85) ' #%  

(86) '% =; (#% Q%q7 R!% 2 σint = π(Rint,proj + Rint,target )2. Rint,proj. <. Rint,target. σint. 4. He 6 He 8 He. 5. 503 ± 5 722 ± 6 817 ± 6. σint 131.2 ± 1.5 198.9 ± 4.6 252.0 ± 4.8. % & (T; D$

(87) '     Q% h 12 W

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(94). A1/3. 6,8. He. . α. . . 208. . Sn ' 8M eV. Pb. 

(95). S2n. 11. Li. .

(96) Stable isotopes One neutron halos. Multi−neutron halos. _W% ,#R"(89h56& 9 P!

(97) ' ™ (I>h ,:

(98)  -%q,78R

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(129) 29,G.6(9A"RQ5-RP.-&:.6* V—D&)ae,#™*-&Ey(>ae7Ÿ’S&EF 56!R ŠC*K^989&D(+BD?&):"54BD.{A<&E,#(e(e.1.6089B­]95-23,#(+,Ž*1?E.6,G]95-,#@#79& 83y.6]x,G:PA<(5-.-,ŽA<?; @#.-&)&E*J5K23;¡:5{A<(9RP:<B.I&)^+(eA~.6AdcP.6&,G:PAQ(¬]9\C56&)A"?*',Ž*-.-&^9&DBDB:"BDA<,#&)( (P.6*189.68+B­23,#79&)892 .I:"AQ7+*-5{&EA<56(9cdRPA<&79@#:"&"; ! B*4]+:PA"BD(+*‹&E(eA¬.6A@#A"235-RP&)]x&&)23(+,Ž23*1.{,#(9A<RD(+?E:"&(A<^9(+:d2 \A .-^9.6&)A"0Q5-RPA<&56.&J792356,#&)*4A".-°>56,#*‹7983,/.D.-&A~2\Z,GA~(0 *-;¡]+5-A":P?EB& 9,GA".6**C56?#&:P>x5-&&)?`–.6.6&)^92Q&7>BD0:".-BD^+&E&),#(P5F.{\ZAA~:<cP;F&'.6;¡^989&Q(x?`*-.-&E,#]x:"A<( 5{+Ad, .-!w&&"2 !w(9,G;=&E83A.65-^+:PA"(+@G: * ;¡;¡235-56&E:PA"c>BR",ŽBDAd.-*4&E&.6(eA"@G.s79,G.456@G.6&F&#@G>+&(>&8+;¡?`56?E.6:"@G*y&)B .-,†!^+.-A<'^+.–(+&E:<,#23;>5k&E.-5O,#^+(9.-&O,G^9.-5-,Ž&'&)A<BD@=AP*-BD:d*-c"89:"&)BDBD2k]3&E(>.6(e8+,G.6:P?A(@#&ER":P.6,#^+(+ceAd*O,#(9. „†eR*48+A<.-.O2+^923^9&)&E,#5-R"(&E^;¡A":"&E]956(+&]9&E56(+56:~A<R"v>56,#,#&)56B*:dd\fAd.-.6^9,G23:P&',Ž( *4B.-D 56a>:P,G}79BDE89aP&E.-(ežS,#:".-F (+89'B¢*J:PA"237+*k,ŽA~*1?0P.6:PAP5-B,#*479^9]x83,~A<.6&E56,G.:P&)(A<2@ :<!.-:;ŸD aP.-23LS^9Fe,Ž&'*1]x.6]95-&)5-,#5479: ;¡:P831&)5-.6BD?,G:P.-,#&)(+@G2 &* .-:"^97+&*-&E;¡565{c"A<&RP2BD(+&EA<(e56.656A<:d.-\ ,#:"(.656A":<(+; *-c"&E5{*-&F:PB( :PA¬BD‚[&E(e.{.-A<8956B R"&29.,#A<*4.-.56,GaP7+T"83T.-,#b:"(Q&¯ :<; ~8 A<(x!=2 ŠC?E^+:"&K(3¦x*6A<5-BDBD&)&K2¬:"7+.-^+*-&E&56cd^+AdA<.-@#,#::"(*1.6\C5-8xA"?`*p.-8+B5-A"&23:"& ; D U"L >a+#F;¡56Ÿ:";¡B­:P5•.6.6^9^9&& B@#AP*1:P.6BD,#?‹&E(e*-?).-Ad89.4B .6&E5623,G,Ž(+*1R.65-,#\F79,/83.6.6^ ,G:Pcd(A<56;¡,G56:P:"8+B *F]9.6^956:"&I7Ÿ(>&)8+*F?\C@#&)A"A"*'5CA<;¡56@ŽA"*4:R"BD]Ÿ&E&E5-(e;¡.{:"Ad56.-BD,#:"&)(Q2:<7x; :".-^¬A<.':"(@#:d\A‚œD U"U.6A"X5-U<RPa &x.FUPAd™ . x<aU"P’ TŸ™<bT &X¯™9d8sŸ! ™ Ÿ™"U Ÿ™<Ha F O u ]9BA<(+5-:e:"2 *1.-.F:P^9(+*4,#.-R"*O5{^ A"A<*p,#&)R"(9AJ^e&E.4]956;¡56:PR":"5- 0 7Ÿ\C&DGA<)a"5{,Ž2*wO.-.6™^9^9&)&'_:"™":P56&™(9.-_@#,Ž0‹?E™<A":"H’ @+(+F !.6&'5-‡&A~( Adcd.6A<]+B,#@#A<A"&)5-79(e.-@G,Ž.)&F?!w8+A<ŠC@#.•A"^95^9&Ky,#R".656^^9AP23&&E,#(+A"BD&E@+&)56BR"AP0‹*4Ad8+.-\F5-.-&)&)^+B5C,#?{29&)^,#(e*4^+..-56AP:<,G*=7+;F.-83¤—^+.-&k,#&E:"8+A"(BD29A<c~A"(+A",G&)2(e5.65{A<&A"RP.29&Z,GA<,X.-@ :\Z! :&ED#56Ÿ&Ea&'H)5wFBD_.-&)]x^9AP&)&K*45489*4;¡:P,#56BD&)5-BD2]9@#&)A"&)2 (+*4.p2\FA<.6,G(+^9.-^2 & ^+:<;—A<@#.6:^9&*1.65-(e8+8x??.-@#89&)A<56&D5\ZBAPAd*I.4.6?&E:P5(3!H¦+56V—B:d\Z&2¬&EcP7>&E0¬5 A.6^9*-89&,G.629A<Ad7+.{@GA &,#]9( ^+&E.6^9(9,#:P*DB?)&)A"(9*-:"&@#:"\ZRP&E,#?)56&A<@=@#,G23BD&)*6,G.-?&)562,#]3w.-,#;¡:":"(5D&:<v3;Z]Ÿ.-&E^956&,GBD?E:"&)(P56&D.{A<A"@Z(+5-2 &A"^+*-A<:"@#(+:* _?:".-:BD]Ÿ.-^9:"&(9&)@#(e:d.6\ * B7x:P:P89BD(+&E29(eA".-5-890B:<;+.-.65{^9A<&—(x*1(>;¡8+&)?E5I@G&)5-8+&)R"*E,#!_:"‡( (DR"&)(9&E5{A<@ <A<@#@3.-^+&)*-&FB&A"*-8956&EBD&E(e„ _.6* ,G<Rx&E!¬v3?EP!&E’e]3ˆK.w\F.6^9^9&F,#?{:"^ (+&Z,#BDBD]9&)@G(P,#&).6*‹,G:PA(9&)*42&)(+,#(D*4,G.-5-,#&Ec>;¡&E,/.1560 &E(+:"?E( & .-D U9^+#F&P:"\p83&).6&E5-&5 *4&)(+*4,G.-,#c"&K.6:D.-^9&I:P83.-&)5F]+A<5-.F:<;–.6^9&J.-:".6A"@s\ZA~cP&—;¡89(x?`.-,#:"(\F^+,#?{^?:PB&*Z;¡5-:PB .-^+&Ic~A"@G&)(+?&J(9&)83.-56:"(?:P(e.-56,G7989.-,#:"(s! 6. 6. 6. He. 8. He. 8. 8. He. He. He. β. β.

(130). 8. He. α. . 8. . He . β 8 He. Li. Li. 6. He. 6,8. 8. α. . <. 6. . He. 4. 5. He. 4. He(6 He,4 He). . 6. He. . 6,8. 8. . He. 6. . He. A. He. .

(131). He. . . . 4. . .

(132). He. . 5. 1. . . . . @. .

(133). . 6. 6. He. 4. 5. He. 6. He. . . . . He. . . <. . >. @. . 0.002 ≤ |t| ≤ 0.05(GeV /c)2.

(134). 

(135). 5. . . . . . .

(136). He.

(137). 5. ,8 48#, ,.  g" "f %    $)" . 9],G9B5-56:":"Ad.-B .6:P,G:P(¦+( R"&E@Ž8+:"A"(5-*4&.-.-,Ž?KP!^9&*-?)*-Ad„¡,G56.4®),G.6&DRP&E^P56:<.k,G;•(+]+R.6^9A<:P5-&.{(Qˆ 23x*4, .6Ÿ5,GA<.K{7+A"\C@G?&KA".-,#*'(>(98+*4R^9?@#:d(>&E\F8+, >?( .-@#&E^9.-8+&J^+*)A<]Ÿ!.K:P KAD*-,/&E.6.1(9,G0>:P&)]9(56,ŽA"?E:"@GA"@#;–0@.-23^+*-, ]x&kŸ5&¦x{A<A"56°>?*4,G.-.Z(+,#:"BDR ( s,#(9:P]x,#(9B‹Ad&D.489.6@G&EB &56A<(567Ÿ(+,#&E*k*k,#(9:";¡R5-79:P.623B­A<&),#]x(9:"&)&]3(+2.623,#;¡?)&E:"A<(e5k@O.C.-23.-^9:, &X5¦+6^9AP5{,G*1?`RP.F.-^ ,#A<:"&E]+( (+]9&E.-5-^x56:~R"Adv>0 .W .-A"^9*6*4&:3A<?,Ž(9AdRP.689&)2H@#A"5.-: ]Ÿ:P.-^9*-,/&.6,G:P,#(+(H?,Ž:<23;C&)(P.-^+.&]9¦+^+5{:<*1.-.:P( BD,G\F(9^+,#B‹,#?{8+^«B±23&E,Ž*]Ÿ&E]+(x5-29:P*D]x:P,G(>54.6cP,G&E:P5{(+*4A<&)@w@G0 .6: :"( .-^+&=\F&)(9^9&E&E5656R"& 0 •A<,#(x*‹2 .-^9&Q,Ž$'*&.-^9ƒp& 56:"29RP,G@GBD,#&&E(x\C*4A~,#:"c"(&D@#:<&E;'(9R".6^9.-^ & B‹23, 89X5@G{‡.-A"( ,#]9?`.6@#.6&‹,G^9(+&*-R?)*4Ad:"]Ÿ.-7 .-&)1&E?E&56,#?`A",#.)(9@—!pR?E“']+AP;=*4^9&&E?:P(9:<89:P;J56BD*-A &&E(9>^+.6:PA<^9( @#:&I„†]3Y—(eW 8x]9(>?]s8+@#&E!p?8+@#$S&E*D8+*F]s\F!#*6^9"?E&))UA<5-e.4&ˆp.6&EA795683,G(9*4.F.-RD56.-:"^+Ad(9.',#*FR T+7x!š&E}A"c>*-,Ž K,#23?K&&E¯S,Ž(+23?E&),Ž&AD*C;¡BD*4:".-5:",#@G56@sA &J^+?E?:":":P@Ž29BD5-&E*C]9W ,G^+@#(&A"vQ@G¦+: 5{A"*4(+*4.F]x2A"Ad.-B‹]9,Ž]9A<8+56@—*4:~.—*4v3.-7Ÿ,G56B&J8+Ad?.-.-.65689,G&):P56Ad(s&.6!&)&2v3,#A"*4*F.6* A ‚p^e8+@G°P:dc &E.A"@†!/Dš™<žSFF^+A~cP&*4^+:d\F( w7>0 A"]9]9@#0>,G(9R¬.-^9& K@ŽA<897Ÿ&E5DA<]9]+5-:eA"?{^ .-:¬.-^9& *6?EA<.4.-&)5-,#(9R¬A<.D’>}~a U >.

(138). . 5. . λ/R. . . . . λ. R.

(139). . p(8 He,8 He).

(140) _

(141) ',#%DR" 89b56&="!’ #I%  "(% <$WQ  S

(142) 

(143) '6(+ -#,  

(144). E 7(% $

(145) % ( $ dσ/dt 

(146) = -7(

(147) T(

(148) '  (7 %

(149) & 9 4 He  4 He>  J     & 9 6 He  6 He>+      : 4 & 9 8 He  8 He>; J    :h D2 #p= W

(150)  U9s7 $m% ˆ7

(151) =%   

(152)   E 

(153) (   : #A : % &  y% ˆ7

(154) '%    

(155) O  

(156) '   :; 2 #(> ?8@:, <:(

(157) '

(158) '($<F%B7  . 

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