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Evaluation et intégration de la recherche française dans le cadre européen et international Président de séance : Bertrand Bellon, Directeur de l'ADIS,

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Présentation au sujet: "Evaluation et intégration de la recherche française dans le cadre européen et international Président de séance : Bertrand Bellon, Directeur de l'ADIS,"— Transcription de la présentation:

1 Evaluation et intégration de la recherche française dans le cadre européen et international Président de séance : Bertrand Bellon, Directeur de l'ADIS, Faculté Jean Monnet, Université Paris-Sud "Introduction des questions en débat" Intervenants : Pierre Pointu, Consultant "L'évaluation comme méthode" Irène Nenner, Directrice Adjointe, Direction des Sciences de la Matière, CEA/Saclay "Modes d'évaluation des chercheurs et des recherches au CEA" Ghislaine Filliatreau, Directrice Adjointe de l'OST, "L'évaluation des universités françaises et les nouvelles conditions de la LOLF" … Les Assises de la Recherche et de l’Enseignement Supérieur mercredi 26 mai 2004 de 9 h à 18 h Amphithéâtre Pierre Lehmann - LAL (Bât. 200) - Orsay

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3 Temporary negative ions and electron affinities of benzene and N-heterocyclic molecules: pyridine, pyridazine, pyrimidine, pyrazine, and s-triazine I. Nenner and G. J. Schulz Department of Engineering and Applied Science, Mason Laboratory, Yale University, New Haven, Connecticut Electron transmission spectroscopy is used to study shape resonances (temporary negative ions) in benzene and some isolectronic N–heterocyclic molecules (pyridine, diazines, and s–triazine), in the energy range 0–6 eV. The lowest shape resonance in each of these molecules exhibits vibrational structure which is interpreted in all cases as the totally symmetric C–C stretch mode. The ground vibrational level of this lowest shape resonance is accessible by electron impact only in benzene and pyridine. Thus, their electron affinities can be determined from the present experiment (–1.15 eV for C6D6 and –0.62 eV for C5H5N). Only excited vibrational levels are accessible in the diazines and s–triazine, indicating that the electron affinities for these molecules have positive values. For benzene, pyridine, and some other aromatic hydrocarbons, we compare the electron affinities established in the gas phase with the polarographic potentials established in the liquid phase and we find a linear relationship. Using this correlation in conjunction with the measured values of the polarographic potentials, we estimate the electron affinities for pyridazine (0.25 eV), pyrimidine (0 eV), pyrazine (0.40 eV) and s–triazine (0.45 eV). J. Chem. Phys. 62 (1975) 1747

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5 Negative ion formation, vibrational excitation, and transmission spectroscopy in hydrogen halides J. P. Ziesel, I. Nenner, and G. J. Schulz Department of Engineering and Applied Science, Mason Laboratory, Yale University, New Haven, Connecticut Three independent experiments are performed in order to elucidate low-energy electron collisions on hydrogen halides. The formation of Cl – and Br – shows a steep onset near threshold and structure at higher energies. This structure occurs at the energies of vibrational levels of the X 1 Σ + ground state of the hydrogen halide. The transmission spectrum of HBr shows structure at the position of the v=1 level of the X 1 Σ + state. In addition, transmission spectra show that the vibrational cross section to v=1 in all the hydrogen halides rises steeply near threshold and levels off about 60 meV above threshold. A trapped-electron experiment in HCl substantiates this observation and in addition, gives the order of magnitude of the vibrational cross section near threshold (2×10 –16 –2×10 –15 cm 2 ). J. Chem. Phys. 63 (1975) 1943

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8 T. Nenner, H. Tien, and J.B. Fenn, J.Chem.Phys. 63 (1975) 5439

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10 Non-Franck–Condon transitions in resonant auto- ionization of N 2 O Tomas Baer, Paul-Marie Guyon, Irene Nenner, Abdallah Tabché- Fouhaillé, René Botter, Luis F. A. Ferreira, and Thomas R. Govers LURE, Laboratoire C.N.R.S., Université Paris-Sud, Orsay, France Autoionization of N 2 O between and 16.4 eV was investigated by photoionization using the pulsed synchrotron radiation from ACO, Orsay's storage ring. Measurements were performed of threshold photoelectron spectra, photoionization spectra, and of photoelectron energy spectra. The latter were obtained from photoelectron time of flight distributions at selected wavelengths. The results suggest that autoionization in the Franck–Condon gap between the X 2 Π and the A 2 Σ + states of N 2 O + proceeds via two distinct mechanisms. The major autoionization process (~90%) produces the X 2 Π state in its low vibrational levels, while a resonant autoionization path (~10%) produces vibrationally excited X 2 Π ions. The latter process is associated with the production of low energy electrons with a distribution peaking sharply at zero energy. This resonant autoionization process appears to be a general phenomena for polyatomic molecules. J. Chem. Phys. 70 (1979) 1585

11 "A year later during my first sabbatical leave spent at the synchrotron in Orsay, Paul Guyon, Irene Nenner, and I plus some others were using the pulsed synchrotron light as a start signal for collecting threshold electrons and we were able to collect much better electron TOF distributions. We noticed the same persistence of threshold electrons in the N 2 O photoionization, and we immediately realized that this was a universal phenomenon and responsible for the observation of ion dissociation onsets in Franck- Condon gaps." (Tom Baer) 发信人 : supi ( 飘飘何所似,天地一沙鸥 ), 信区 : Chemistry 标 题 : Why I Love Science: A Personal Statement?br / > 发信站 : 鼓浪听涛 (2004 年 11 月 06 日 09:19:14 星期六 ), 站内信件

12 I. Nenner, P.- M. Guyon, T. Baer & T. Govers, J.Chem.Phys. 72 (1980) 6587

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15 12/12/1980

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17 Physics of molecular ion formation Paul-Marie Guyon and Irene Nenner » View Full Text: PDF (1546 KB) View Full Text: PDF Citation P. Guyon and I. Nenner, "Physics of molecular ion formation," Appl. Opt. 19, (1980) References Please [login to View References][login to View References] OSA is a member of CrossRef.CrossRef

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19 A synchrotron radiation photoionisation source for the study of electron-molecule collisions D Field et al 1984 J. Phys. B: At. Mol. Phys doi: / /17/22/017 D FieldD Field, J P Ziesel, P M Guyon and T R Govers LURE, Univ. Paris-Sud, Orsay, FranceJ P ZieselP M GuyonT R Govers Abstract. A source of electrons has been constructed suitable for low-energy and high-resolution studies of electron-molecule collisions. The source is based on the principle of threshold photoionisation of Ar using synchrotron radiation. The experimental system is described in some detail. The characteristics of the apparatus have been tested in a series of electron transmission experiments involving He, Ar, N 2, O 2 and CF 4, down to energies of 50 meV. Scattering by CF 4 shows marked excitation phenomena in vibrational channels. The photoionisation technique shows considerable promise for beam experiments planned to start shortly.

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21 3ème Colloque Européen sur la Spectroscopie Moléculaire et la Dynamique Photoinduite, mai 1985, SEILLAC (France).

22 Atomic Autoionization Following Very Fast Dissociation of Core - Excited HBr P. Morin and I. Nenner Laboratoire pour l'Utilisation du Rayonnement Electromagnétique, Université de Paris-Sud, Orsay Cédex, France Départment de Physico-Chimie, Commissariat à l'Energie Atomique, Centre d'Etudes Nucléaires de Saclay, Gif sur Yvette Cédex, France Received 28 February 1986 Photoelectron spectroscopy excited by monochromatic synchrotron radiation (68-80 eV range) is used to study the Br 3d excitation in HBr. The transition to an antibonding orbital is shown to produce a resonant state whose repulsive nature has been observed directly. A two-step relaxation process involving a fast neutral dissociation followed by the autoionization of the excited fragment has been shown for the first time. Phys. Rev. Letters 56 (1986) 1913

23 Measurements of partial and differential photoionization cross sections of helium and diatomic molecules in the 15–100 eV range by angular electron spectroscopy P. Morin 1, *, M. Y. Adam 2, I. Nenner 1, J. Delwiche 2, 3, *, M. J. Hubin- Franskin 4, 3, * and P. Lablanquie 1 1 Département de Physico-Chimie, Centre d'Etudes Nucléaires de Saclay, 91490, Gif-Sur-Yvette Cédex, France 2 Equipe de Physique Atomique, Université de Paris VII, Place Jussieu, 75005, Paris, France 3 Institut de Chimie, Université de Liège, Sart Tilman, 4000 par, Liège 1, Belgium 4 LURE, Bâtiment 209 c, Université de Paris-Sud, 91405, Orsay Cédex, France Nucl. Instr. Meth. 208 (1983) 761

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29 Arrêté du 31 mars 2005 portant nomination au Conseil supérieur de la recherche et de la technologie. JO du , p. 6886, texte n° 32 Sont nommés membres du Conseil supérieur de la recherche et de la technologie pour une durée de trois ans : 1. En qualité de membres représentatifs des communautés scientifiques et techniques et des différents secteurs de la recherche, a) Sur proposition : - des sections du Comité national de la recherche scientifique : M. Jean Etourneau ; Mme Anne-Marie Guimier-Sorbets ; M. Bernard Renault ; M. Francis-André Wollman ; - des conseils scientifiques des établissements de recherche et de développement technologique : Mme Geneviève Debouzy ; Mme Isabelle de Lamberterie ; M. Emmanuel Jolivet ; Mme Irène Nenner- Baumel ; - d'une instance nationale d'évaluation de la recherche universitaire : M. Dominique Chagnollaud ; Mme Jacqueline Lecourtier. b) En qualité de personnalités choisies en fonction de leurs compétences dans le domaine des sciences, de la technologie et de l'innovation : ….

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31 Hostile à toute politique des quotas, Irène Nenner, directrice adjointe à la direction des sciences de la matière au Commissariat à l'énergie atomique (CEA), compte, quant à elle, sur les qualités spécifiques du sexe féminin, particulièrement adaptées aux besoins de la recherche d'aujourd'hui. "L'aptitude à la communication, à la gestion du changement se retrouve plus souvent chez les femmes", estime-t-elle. L'Express du 04/01/2001

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33 Potato Topped Turkey Loaf Serves four 2lb Empire ground turkey 1 cup chopped onions 1/4 cup chopped peppers 2 teaspoons of ground pepper 1/2 cup of tomato juice 1/2 cup of Matzo Meal Mix all ingredients and shape into loaf. Cook four potatoes and mash up and put on top of loaf. Sprinkle with paprika. Put in well greased loaf pan at 400 degrees for one hour. Let cool before you slice. First Prize Recipe Submitted by Irene Nenner

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