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Interdisciplinary activities connected to astrophysical issues at the Orsay Tandem facility.

Explore cosmic rays, astrochemistry, and interstellar medium at the Orsay Tandem facility. Discover molecular abundances, dust evolution, and more in this comprehensive workshop.

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Interdisciplinary activities connected to astrophysical issues at the Orsay Tandem facility.

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  1. Interdisciplinary activities connected to astrophysical issues at the Orsay Tandem facility. Marin Chabot Institut de Physique Nucléaire d’Orsay 5th LEA-COLLIGA workshop - November 14th 2011 - Orsay

  2. Outline Cosmic Ray on HIFI-Planck bolometer Collaboration IAS – Grenoble- IPNO AGAT program for Astrochemistry Collaboration IPNO-ISMO-…. 3.4 µm Band in Interstellar Medium Collaboration IAS-ISMO-IPNO-CSNSM 5th LEA-COLLIGA workshop - November 14th 2011 - Orsay

  3. AF  C2H l-C3H  C4H l-H2C4 CH2CHCN  HCOOCH3 CH3CH2CN  (CH3)2CO  AlCl  C2O C3N  C4Si C2H4 CH3C2H  CH3COOH  (CH3)2O  NH2CH2COOH C2 C2S C3O  l-C3H2 CH3CN HC5N  C7H CH3CH2OH  CH3CH2CHO CH3OC2H5 CH  CH2 C3S  c-C3H2 CH3NC  HCOCH3 H2C6 HC7N  H2 C3 c-C3H  C5 C5H  C6H  CH3C3N  CH3C4H  CH3C5N  HC9N  HC11N CH+  HCN C2H2 CH2CN CH3OH NH2CH3 CH2OHCHO C8H  CN HCO CH2D+ CH4 CH3SH  c- C2H4O CH2CHCHC CO HCO+ HCCN  HC3N HC3NH+  CH2CHOH CO+ HCS+ HCNH+  HC2NC HC2CHO  CP  HOC+ HNCO HCOOH NH2CHO CSi  H2O HNCS  H2CHN C5N  HCl  H2S HOCO+  H2C2O HC4N KCl  HNC H2CO H2NCN NH HNO H2CN  HNC3 NO  MgCN H2CS SiH4 NS  MgNC H3O+ H2COH+ NaCl  N2H+ NH3 OH N2O SiC3 PN  NaCN C4 SO OCS SO+  SO2 SiN  c-SiC2 SiO  CO2 SiS  NH2 CS H3+ HF  SICN SH  AINC AGAT program for astrochemistry ISM is full of molecules !

  4. ISM molecules everywhere Dusts formed in the dying starts. THE PROCESSES - Gas phase - Ziurys L. M. PNAS 2006 Naissance des étoiles • ion-molécules • Association radiative • Recombinaison dissociative • Photodissociation • neutre-neutre • Rayonnement cosmique Planètes diffuse cloud CR UV Gravitation collapse. The fragmentation, an universal process for electrinically excited species Modélisation INPUT • Supernova • Stars • Choc • The Reaction rates • The Branching Ratios Molecular clouds CR

  5. fragmentation spectroscopy with AGAT Amplitude crête Le Tandem d’Orsay produit des molécules au MeV 2 Energie New : X-ray CCD camera C10+ + He → {Cn}° Hamamatsu

  6. Branching Ratio measurements Every body is welcome …

  7. An example of AGAT result Horse head is a dusty cloud with lot of PAHs

  8. Evolution of the 3.4 μm band carriersin the interstellar medium ASTRO LABO M. Gordard (Thesis), E. Dartois (IAS) , T.Pino (ISMO) , M. Chabot(IPNO) et al. Spectral signatures of aliphatic C-H vibrations

  9. The 3.4 μm band carriers disappear in dense medium. Observation of the 3.4μm band 3.4 μm band not observed ! Diffuse interstellar medium Dense interstellar medium Evolution of dust due to: UV irradiation Cosmic rays irradiation Hydrogen atoms exposition ...

  10. Irradiated samples Low pressure plasma: a-C:H Vacuum Flame: Soot H/C ~ 10-2 H/C ~ 1

  11. Tandem Experiment Fluence IR spectroscopy measured during the experiment to follow the evolution induced by irradiations.

  12. Evolution of interstellar aliphatic C-H exposed to cosmic rays SRIM (Z,E) → Se(Z,E) → σd(Z,E) et ρf/ρi(Z,E) Dehydrogenation by a CR(Z,E) Cosmic ray flux:Φ(Z,E)

  13. Evolution of the 3.4 μm band in interstellar medium

  14. Cosmic Ray on HIFI-Planck bolometer • The Planck satellite was launched in May 2009 • dedicated to the study of the CMB (cosmic microwave background) • - The HFI instrument • - under IAS responsibility • - uses bolometers cooled at 100 mK

  15. Cosmic Ray are abundant at L2

  16. Experiment on 320 beam line at Tandem

  17. Glitches are Cosmic Ray

  18. Conclusion Have a drink ? Thank you.

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