Search - Université de Rennes Access content directly

Filter your results

34 Results
authIdHal_s : divita-gupta

Detecting branching ratios of chemical reactions at astrophysically relevant temperatures using chirped pulse millimeter wave spectroscopy in continuous CRESU flows

Brian M. Hays , Théo Guillaume , Thomas Hearne , Omar Abdelkader Khedaoui , Ilsa R. Cooke et al.
International Symposium on Molecular Spectroscopy, Jun 2019, Champaign-Urbana, United States
Conference papers hal-02115360v1
Image document

Benzonitrile as a Proxy for Benzene in the Cold ISM: Low-temperature Rate Coefficients for CN + C 6 H 6

Ilsa R. Cooke , Divita Gupta , Joseph Messinger , Ian R Sims
The Astrophysical journal letters, 2020, 891 (2), pp.L41. ⟨10.3847/2041-8213/ab7a9c⟩
Journal articles hal-02510885v1

Reaction Kinetics of Complexation Studied by Rotational Spectroscopy Coupled with Uniform Supersonic Flows

Alberto Macario Farto , Myriam Drissi , Omar Abdelkader Khedaoui , Théo Guillaume , Brian Hays et al.
Journée des doctorants : PhDay 2022, Nov 2022, Rennes, France
Conference poster hal-03902253v1

Experimental studies of vibrational relaxation and formation of weakly bound complexes in cold uniform supersonic flows

Alberto Macario Farto , Myriam Drissi , Omar Abdelkader Khedaoui , Théo Guillaume , Brian Hays et al.
Collisional excitation of astrophysical molecules and its applications, Jun 2022, Saint Florent, France
Conference papers hal-03725322v1

A new E-band chirped pulse spectrometer for chemical kinetics applications

Brian M. Hays , Théo Guillaume , Thomas Hearne , Omar Abdelkader Khedaoui , Ilsa R. Cooke et al.
International Symposium on Molecular Spectroscopy, Jun 2019, Champaign-Urbana, United States
Conference papers hal-02115356v1

Experimental determination of reaction product branching ratios at low temperatures for astrochemistry

Ian R Sims , Brian M. Hays , Théo Guillaume , Thomas Hearne , Ilsa R. Cooke et al.
The First International Astronomical Union Symposium on Laboratory Astrophysics, IAUS 350: Laboratory Astrophysics: from Observations to Interpretation, Apr 2019, Cambridge, United Kingdom
Conference papers hal-02114779v1
Image document

Collisional excitation of HNC by He found to be stronger than for structural isomer HCN in experiments at the low temperatures of interstellar space

Brian M. Hays , Divita Gupta , Théo Guillaume , Omar Abdelkader Khedaoui , Ilsa R. Cooke et al.
Nature Chemistry, 2022, ⟨10.1038/s41557-022-00936-x⟩
Journal articles hal-03687777v1

Chirped pulse mm-wave and pulsed laser studies of gas phase molecular collisions for astrochemical applications

Brian M. Hays , Thomas Hearne , Ilsa R. Cooke , Théo Guillaume , Omar Abdelkader Khedaoui et al.
Tuesday UVa / NRAO Astronomy (TUNA) Lunch Talk (moved online), Mar 2020, Charlottesville, United States
Conference papers hal-02935959v1

Reaction Kinetics of Complexation Studied by Rotational Spectroscopy Coupled with Uniform Supersonic Flows

Alberto Macario Farto , Myriam Drissi , Omar Abdelkader Khedaoui , Théo Guillaume , Brian Hays et al.
26th International Symposium on Gas Kinetics and Related Phenomena, Aug 2022, Rennes, France
Conference poster hal-03902248v1
Image document

Low Temperature Kinetics of the Reaction Between Methanol and the CN Radical

Divita Gupta , Sidaty Cheikh Sid Ely , Ilsa R. Cooke , Théo Guillaume , Omar Abdelkader Khedaoui et al.
Journal of Physical Chemistry A, 2019, 123 (46), pp.9995-10003. ⟨10.1021/acs.jpca.9b08472⟩
Journal articles hal-02360549v1

Experimental determination of reaction product branching ratios at low temperature for astrochemistry using chirped pulse microwave spectroscopy

Théo Guillaume , Omar Abdelkader Khedaoui , Brian M. Hays , Thomas Hearne , Ilsa R. Cooke et al.
38EME EDITION DU COLLOQUE ANNUEL DU GROUPE FRANÇAIS DE CINETIQUE ET PHOTOCHIMIE (GFCP), Jun 2019, Rennes, France
Conference papers hal-02468768v1

A New Chirped Pulse Microwave Spectrometer Dedicated to the Measurement of Reaction Product Branching Ratios for Astrochemistry

Brian M. Hays , Thomas Hearne , Théo Guillaume , Omar Abdelkader Khedaoui , Ilsa R. Cooke et al.
The First International Astronomical Union Symposium on Laboratory Astrophysics, IAUS 350: Laboratory Astrophysics: from Observations to Interpretation, Apr 2019, Cambridge, United Kingdom.
Conference poster hal-02115285v1
Image document

Vacuum ultraviolet photoabsorption spectra of an in-situ synthesized peptide precursor: hydroxylamine on a cold astrochemical dust analogue

R. Thombre , Divita Gupta , S. Pavithraa , J- Lo , S-L Chou et al.
The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2022, 76 (3), pp.53. ⟨10.1140/epjd/s10053-022-00365-y⟩
Journal articles hal-03629815v1

Recent developments in Chirped Pulse in Uniform Flow techniques for the measurement of low-temperature reaction product branching ratios

Théo Guillaume , Divita Gupta , Brian M. Hays , Ilsa R. Cooke , Omar Abdelkader Khedaoui et al.
APS March Meeting 2021, Mar 2021, Virtuel, États-Unis
Conference papers hal-03313515v1
Image document

Design and performance of an E-band chirped pulse spectrometer for kinetics applications OCS – He pressure broadening

Brian M. Hays , Théo Guillaume , Thomas Hearne , Ilsa R. Cooke , Divita Gupta et al.
Journal of Quantitative Spectroscopy and Radiative Transfer, 2020, 250, pp.107001. ⟨10.1016/j.jqsrt.2020.107001⟩
Journal articles hal-02638438v1

Kinetics of the reaction between the CN radical and methanol at low temperatures using the CRESU technique

Ilsa R. Cooke , Divita Gupta , Sidaty Cheikh Sid Ely , Théo Guillaume , Thomas Hearne et al.
38EME EDITION DU COLLOQUE ANNUEL DU GROUPE FRANÇAIS DE CINETIQUE ET PHOTOCHIMIE (GFCP), Jun 2019, Rennes, France
Conference papers hal-02282223v1

N-graphene synthesized in astrochemical ices

B. Sivaraman , K. K. Rahul , M. Ambresh , D. Sahu , J.K. Meka et al.
The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2023, 77 (2), pp.24. ⟨10.1140/epjd/s10053-023-00590-z⟩
Journal articles hal-04016755v1

Chirped Pulse Microwave Fourier-Transform Spectrometry for the Determination of Product Branching Ratios

Thomas Hearne , Brian M. Hays , Ilsa R. Cooke , Théo Guillaume , Omar Abdelkader Khedaoui et al.
26th Colloquim on High Resolution Molecular Spectroscopy, Aug 2019, Dijon, France
Conference papers hal-02281613v1

Product branching ratios for astrochemical reactions determined in low temperature experiments

Thomas Hearne , Brian M. Hays , Ilsa R. Cooke , Omar Abdelkader Khedaoui , Théo Guillaume et al.
Semaine de l'Astrophysique Française, May 2019, Nice, France
Conference papers hal-02114917v1

Probing low temperature product branching ratios for the reaction of CN radical with propene

Divita Gupta , Brian Hays , Myriam Drissi , Théo Guillaume , Ilsa R. Cooke et al.
Quadmarts, Jun 2022, Lille, France
Conference papers hal-03727129v1

Experimental determination of reaction product branching ratios at low temperatures for astrochemistry

Brian M. Hays , Thomas Hearne , Ilsa R. Cooke , Théo Guillaume , Omar Abdelkader Khedaoui et al.
XXVII Dynamics of Molecular Collisions Conference (DMC), Jul 2019, Big Sky, Montana, United States
Conference papers hal-02369063v1

Dynamics and kinetics studied by chirped pulse microwave spectroscopy in cold uniform supersonic flows

Alberto Macario Farto , Myriam Drissi , Omar Abdelkader Khedaoui , Théo Guillaume , Brian Hays et al.
International Symposium on Molecular Spectroscopy ( ISMS ) 2022, Jun 2022, Urbana-Champaign, United States
Conference papers hal-03725324v1
Image document

Rate coefficients and branching ratio measurements for reactions of astrochemical relevance involving CN radicals

Divita Gupta
Chemical Physics [physics.chem-ph]. Université Rennes 1, 2021. English. ⟨NNT : 2021REN1S129⟩
Theses tel-03934779v1
Image document

Vacuum Ultraviolet photoabsorption of molecules with astrochemical and astrobiological relevance: Benzonitrile and Hydroxylamine

Divita Gupta , Rebecca Thombre , Jen Iu Lo , Bing-Ming Cheng , Raja Sekhar B.N. et al.
The First International Astronomical Union Symposium on Laboratory Astrophysics, IAUS 350: Laboratory Astrophysics: from Observations to Interpretation, Apr 2019, Cambridge, United Kingdom
Conference poster hal-02115070v1

Study of complexation kinetics processes by rotational spectroscopy coupled with uniform supersonic flows

Alberto Macario Farto , Myriam Drissi , Omar Abdelkader Khedaoui , Théo Guillaume , Brian Hays et al.
QUADMARTS :QUAntitative Detection of Molecular And radical Trace Species, Jun 2022, Lille, France
Conference papers hal-03725325v1

Signal to Noise Modelling and Optimisation for Chirped Pulse in Uniform Flow Experiments

Thomas Hearne , Brian M. Hays , Ilsa R. Cooke , Omar Abdelkader Khedaoui , Théo Guillaume et al.
Second QUADMARTS International Research Network Workshop, LRGP, Lorraine University, May 2019, Nancy, France
Conference papers hal-02114923v1

A New Chirped Pulse Microwave Spectrometer Dedicated to the Measurement of Reaction Product Branching Ratios for Astrochemistry

Brian M. Hays , Thomas Hearne , Théo Guillaume , Omar Abdelkader Khedaoui , Ilsa R. Cooke et al.
Second QUADMARTS International Research Network Workshop, LRGP, Lorraine University, May 2019, Nancy, France
Conference poster hal-02115268v1

Kinetics of the reaction between the CN radical and methanol at low temperatures using the CRESU technique

Divita Gupta , Théo Guillaume , Sidaty Cheikh Sid Ely , Ilsa R. Cooke , Thomas Hearne et al.
The First International Astronomical Union Symposium on Laboratory Astrophysics, IAUS 350: Laboratory Astrophysics: from Observations to Interpretation, Apr 2019, Cambridge, United Kingdom
Conference poster hal-02115103v1

Rate coefficients and branching ratio measurements for reactions of astrochemical relevance involving CN radical [Defense 06.10.2021]

Divita Gupta
2018
Preprints, Working Papers, ... hal-02277618v1
Image document

Rate Constants of the CN plus Toluene Reaction from 15 to 294 K and Interstellar Implications

Joseph P. Messinger , Divita Gupta , Ilsa R. Cooke , Mitchio Okumura , Ian R Sims et al.
Journal of Physical Chemistry A, 2020, 124 (39), pp.7950-7958. ⟨10.1021/acs.jpca.0c06900⟩
Journal articles hal-02996160v1