1000 resultados para He-Ne


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Mode of access: Internet.

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Libretto by the composer. Cf. New Grove.

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Mode of access: Internet.

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Mode of access: Internet.

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Vols. [3]-[4] contain "Mélanges historiques."

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The (He3, n) reactions on B11, N15, O16, and O18 targets have been studied using a pulsed-beam time-of-flight spectrometer. Special emphasis was placed upon the determination of the excitation energies and properties of states with T = 1 (in Ne18), T = 3/2 (in N13 and F17) and T = 2 (in Ne20). The identification of the T = 3/2 and T = 2 levels is based on the structure of these states as revealed by intensities and shapes of angular distributions. The reactions are interpreted in terms of double stripping theory. Angular distributions have been compared with plane and distorted wave stripping theories. Results for the four reactions are summarized below:

1) O16 (He3, n). The reaction has been studied at incident energies up to 13.5 MeV and two previously unreported levels in Ne18 were observed at Ex = 4.55 ± .015 MeV (Γ = 70 ± 30 keV) and Ex = 5.14 ± .018 MeV (Γ = 100 ± 40 keV).

2) B11 (He3, n). The reaction has been studied at incident energies up to 13.5 MeV. Three T = 3/2 levels in N13 have been identified at Ex = 15.068 ± .008 MeV (Γ ˂ 15 keV), Ex = 18.44 ± .04, and Ex 18.98 ± .02 MeV (Γ = 40 ± 20 keV).

3) N15 (He3, n). The reaction has been studied at incident energies up to 11.88 MeV. T = 3/2 levels in F17 have been identified at Ex = 11.195 ± .007 MeV (Γ ˂ 20 keV), Ex = 12.540 ± .010 MeV (Γ ˂ 25 keV), and Ex = 13.095 ± .009 MeV (Γ ˂ 25 keV).

4) O18 (He3, n). The reaction has been studied at incident energies up to 9.0 MeV. The excitation energy of the lowest T = 2 level in Ne20 has been found to be 16.730 ± .006 MeV (Γ ˂ 20 keV).

Angular distributions of the transitions leading to the above higher isospin states are well described by double stripping theory. Analog correspondences are established by comparing the present results with recent studies (t, p) and (He3, p) reactions on the same targets.

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An investigation of a commercial oxide dispersion-strengthened steel (MA9561) irradiated with high energy Ne-ions to high doses at elevated temperatures is presented. Specimens of MA956 oxide dispersion strengthened steel together with a 9% Cr ferritic/martensitic steel, e.g., Grade 92 steel were irradiated simultaneously with 20Ne-ions (with 122 MeV) to successively increasing damage levels of 1, 5 and 10 dpa at the damage peak at 440 C and 570 C, respectively. Cross-sectional microstructures of the specimens were investigated with transmission electron microscopy. MA956 oxide dispersion strengthened steel showed a higher resistance to void swelling especially to void growth at the grain boundaries than the ferritic/martensitic steel, e.g., Grade 92 steel did, and thus exhibited a prominence for an application in the situation of a high He production at high temperatures. The suppression of the growth of voids especially at the grain boundaries in MA956 is ascribed to an enhanced recombination of the point defects and a trapping of Ne atoms at the interfaces of the yttrium–aluminum oxide particles and the matrix.

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An experiment of Mg-22 and Ne-20 beams bombarding on a C-12 target at an energy of 60 similar to 70 A MeV has been performed at the RIKEN projectile fragment separator (RIPS)in the RIKEN Ring Cyclotron Facility to study the two-proton correlated emission from Mg-22 and Ne-20 excited states. The two-protons momentum correlation functions have been obtained for Mg-22 and Ne-20, respectively. The trajectories of the Mg-22 decayed products (Ne-20 + p + p) were also measured to get the angular correlations between the two protons in Center of Mass of decaying system by relativistic-kinematics reconstruction. The results exhibit that Mg-22 has the features of He-2 cluster decay mechanism.

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Fluorescence yields are reported for 3lnl' Rydberg series members in He-like ions of N, O and Ne. Results are presented for singlet series members with n values between 3 and 9, i.e. up to the region of overlap with the states belonging to the 4l4l' manifold in these atoms. This data is required, for example, for the interpretation of charge-exchange experiments involving bare N, O and Ne nuclei. Fluorescence yields, averaged over all 3lnl' singlet states, larger than 50% are obtained from about n = 7.

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Spectroscopic studies of line emission intensities and ratios offer an attractive option in the\r\ndevelopment of non-invasive plasma diagnostics. Evaluating ratios of selected He I line\r\nemission profiles from the singlet and triplet neutral helium spin systems allows for simultaneous\r\nmeasurement of electron density (ne) and temperature (Te) profiles. Typically, this powerful\r\ndiagnostic tool is limited by the relatively long relaxation times of the 3S metastable term of helium\r\nthat populates the triplet spin system, and on which electron temperature sensitive lines are based.\r\nBy developing a time dependent analytical solution, we model the time evolution of the two spin\r\nsystems. We present a hybrid time dependent/independent line ratio solution that improves the\r\nrange of application of this diagnostic technique in the scrape-off layer (SOL) and edge plasma\r\nregions when comparing it against the current equilibrium line ratio helium model used at\r\nTEXTOR.

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Contient : I, livre préliminaire太上感應篇纂註Tai shang gan ying pian zuan zhu.Le Tai shang gan ying pian, avec commentaires ; II, livre préliminaire文昌帝君陰隲文纂註Wen chang di jun yin zhi wen zuan zhu.Le Yin zhi wen, du dieu de la Littérature, avec commentaires ; III, livre préliminaire文昌帝君覺世文纂註Wen chang di jun jue shi wen zuan zhu.Traité pour éveiller le monde, par le dieu de la Littérature ; IV, livre préliminaire關聖帝君覺世經 。釋略并諭Guan sheng di jun jue shi jing. Shi lüe bing yu.Le vrai livre sacré du réveil du monde, par le dieu de la Guerre ; V, livre préliminaire純陽祖師警士文Chun yang zu shi jing shi wen.Avertissement aux lettrés, traité du dieu Fu you ; VI, livre préliminaire魏元君勸世文Wei yuan jun quan shi wen ; VII, livre 1勸孝集說Quan xiao ji shuo.Recueil de textes recommandant la piété filiale ; VIII, livre 2戒淫集說Jie yin ji shuo.Recueil de textes contre l'impureté ; IX, livre 2文昌帝君戒淫文Wen chang di jun jie yin wen.Traité contre l'impureté, par le dieu de la Littérature ; X, livre 2文昌帝君天戒錄Wen chang di jun tian jie lu.Défenses célestes, notées par le dieu de la Littérature ; XI, livre 2三丰張眞人戒淫說San feng zhang zhen ren jie yin shuo.Traité contre l'impureté, par l'homme vrai Zhang, de San feng ; XII Livre 2文昌帝君慾海廻狂寶訓Wen chang di jun yu hai hui kuang bao xun.Instructions pour tirer l'insensé de la mer de la concupiscence, par le dieu de la Littérature ; XIII, livre 3勸戒彚抄Quan jie hui chao.Recueil de conseils et de défenses.Wen di quan zhong.Traité pour conseiller la fidélité, par le dieu de la Littérature ; XIV, livre 3文帝戒士子文Wen di jie shi zi wen.Conseils aux lettrés, par le dieu de la Littérature ; XV, livre 3文帝鱣壇勸世文Wen di zhan tan quan shi wen.Conseils donnés au monde par le dieu de la Littérature, à l'autel Zhan ; XVI, livre 3文帝鱣壇語錄Wen di zhan tan yu lu.Entretiens du dieu de la Littérature à l'autel Zhan ; XVII, livre 3蕉窻十則并序Jiao chuang shi ze bing xu.Les dix commandements de Jiao tchhoang, avec préface ; XVIII, livre 3文帝三教論 。七願 。十戒Wen di san jiao lun. Qi yuan. Shi jie.Dissertation sur les trois religions ; les sept vœux ; les dix commandements : du dieu de la Littérature ; XIX, livre 3呂祖師訓世文Lü zu shi xun shi wen.Instructions au monde par le dieu Fu you ; XX, livre 3勸敬惜字紙文Quan jing xi zi zhi wen.Traité pour conseiller le respect des caractères d'écriture ; XXI, livre 3敬字說Jing zi shuo.Traité sur le respect des caractères d'écriture ; XXII, livre 3惜字說Xi zi shuo.Traité sur le ménagement des caractères d'écriture ; XXIII, livre 3勸敬惜五榖文Quan jing xi Wu gu wen.Traité du respect des cinq sortes de grains ; XXIV, livre 3戒殺生說Jie sha sheng shuo.Traité pour défendre de tuer les êtres ayant vie ; XXV, livre 3戒溺女說Jie ni nü shuo.Traité pour défendre de noyer les petites filles ; XXVI, livre 3戒賭文Jie du wen.Traité contre le jeu ; XXVII, livre 3戒嗜酒Jie shi jiu.Défense d'aimer le vin ; XXVIII, livre 3戒貪財Jie tan cai.Défense de convoiter les richesses ; XXIX, livre 3戒聽讒Jie ting chan.Défense d'écouter la calomnie ; XXX, livre 3戒口過文Jie kou ge wen.Traité pour interdire les péchés de langue ; XXXI, livre 3戒損人利己說Jie sun ren li ji shuo.Traité pour interdire de chercher des avantages personnels au détriment d'autrui ; XXXII, livre3不自棄文Bu zi qi wen.Traité recommandant de ne pas s'abandonner au vice ; XXXIII, livre 3戒慢葬Jie man zang.Traité pour défendre d'user de négligence dans les funérailles ; XXXIV, livre 3戒不修治墳墓Jie bu xiu zhi fen mu.Traité recommandant d'entretenir les tombes ; XXXV, livre 3勸塾師培植子弟Quan shu shi pei zhi zi di.Traité recommandant aux maîtres de prendre soin de leurs élèves ; XXXVI, livre 3勸尊重師傅Quan zun zhong shi fu.Traité recommandant aux élèves d'honorer leur maître ; XXXVII, livre 3勸幕賓Quan mo bin.Conseils aux secrétaires privés des mandarins ; XXXVIII, livre 3勸公門修行Quan gong men xiu xing.Dans les affaires publiques, il faut régler sa conduite ; XXXIX, livre 3勸擇術慎業Quan ze shu shen ye.Il faut choisir un métier et s'y appliquer ; XL, livre 3勸化惡助善Quan hua e zu shan.Il faut corriger le mal et contribuer au bien ; XLI, livre 3勸排難解紛Quan phai nan jie fen.Il faut écarter les obstacles et dissiper les difficultés ; XLII, livre 3勸謙和雍睦Quan qian he yong mu.Traité pour conseiller l'esprit de conciliation et de concorde ; XLIII, livre 3勸救濟Quan jiu ji.Il faut aider (ceux qui ont besoin d'aide) ; XLIV, livre 3賑饑十二善Zhen ji shi er shan.Il faut nourrir les affamés ; XLV, livre 3勸敬說Quan jing shuo.Traité sur le respect ; XLVI, livre 3勸畏說Quan wei shuo.Traité sur la crainte respectueuse ; XLVII, livre3改過之法Gai ge zhi fa.Moyen de corriger les fautes ; XLVIII, livre3勸惜福Quan xi fu.Il faut ménager sa part de bonheur ; XLIX, livre3耕心說Geng xin shuo. 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