Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles

Kostko, Oleg; Jacobs, Michael I.; Xu, Bo; Wilson, Kevin R.; Ahmed, Musahid

doi:10.1063/1.5126343

Title: Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles

Abstract

Electron transport is of fundamental importance and has application in a variety of fields. Different scattering mechanisms affect electron transport in the condensed phase; hence, it is important to comprehensively understand these mechanisms and their scattering cross sections to predict electron transport properties. Whereas electron transport is well understood for high kinetic energy (KE) electrons, there is a discrepancy in the experimental and theoretical values for the Inelastic Mean Free Path (IMFP) in the low KE regime. In this work, velocity map imaging soft X-ray photoelectron spectroscopy is applied to unsupported organic nanoparticles (squalene) to extract experimental values of inelastic and elastic mean free paths (EMFPs). The obtained data are used to calculate corresponding scattering cross sections. The data demonstrate a decrease in the IMFP and increase in the EMFP with increasing electron KE between 10 and 50 eV.

Authors:

Kostko, Oleg ^[1]; Jacobs, Michael I. ^[2]; Xu, Bo ^[1]; Wilson, Kevin R. ^[1]; Ahmed, Musahid ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Publication Date:: Wed Sep 18 00:00:00 EDT 2019

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division

OSTI Identifier:: 1564077

Alternate Identifier(s):: OSTI ID: 1592793

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Chemical Physics

Additional Journal Information:: Journal Volume: 151; Journal Issue: 18; Journal ID: ISSN 0021-9606

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Kostko, Oleg, Jacobs, Michael I., Xu, Bo, Wilson, Kevin R., and Ahmed, Musahid. Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles.  United States: N. p., 2019. 
Web.  doi:10.1063/1.5126343.

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                    Kostko, Oleg, Jacobs, Michael I., Xu, Bo, Wilson, Kevin R., & Ahmed, Musahid. Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles.  United States.  https://doi.org/10.1063/1.5126343

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                    Kostko, Oleg, Jacobs, Michael I., Xu, Bo, Wilson, Kevin R., and Ahmed, Musahid. Wed .  
"Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles".  United States.  https://doi.org/10.1063/1.5126343.  https://www.osti.gov/servlets/purl/1564077.

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@article{osti_1564077,

  title        = {Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles},

  author       = {Kostko, Oleg and Jacobs, Michael I. and Xu, Bo and Wilson, Kevin R. and Ahmed, Musahid},

  abstractNote = {Electron transport is of fundamental importance and has application in a variety of fields. Different scattering mechanisms affect electron transport in the condensed phase; hence, it is important to comprehensively understand these mechanisms and their scattering cross sections to predict electron transport properties. Whereas electron transport is well understood for high kinetic energy (KE) electrons, there is a discrepancy in the experimental and theoretical values for the Inelastic Mean Free Path (IMFP) in the low KE regime. In this work, velocity map imaging soft X-ray photoelectron spectroscopy is applied to unsupported organic nanoparticles (squalene) to extract experimental values of inelastic and elastic mean free paths (EMFPs). The obtained data are used to calculate corresponding scattering cross sections. The data demonstrate a decrease in the IMFP and increase in the EMFP with increasing electron KE between 10 and 50 eV.},

  doi          = {10.1063/1.5126343},

  journal      = {Journal of Chemical Physics},

  number       = 18,

  volume       = 151,

  place        = {United States},

  year         = {Wed Sep 18 00:00:00 EDT 2019},

  month        = {Wed Sep 18 00:00:00 EDT 2019}

}

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Title: Velocity map imaging of inelastic and elastic low energy electron scattering in organic nanoparticles

Abstract

Citation Formats

Hot-Electron Transport in Polymeric Dielectrics journal, July 1984

Quantitative electron spectroscopy of surfaces: A standard data base for electron inelastic mean free paths in solids journal, February 1979

Photoelectron Angular Distributions from Liquid Water: Effects of Electron Scattering journal, October 2013

Angular Distribution of Photoelectrons journal, January 1968

New model for electron‐impact ionization cross sections of molecules journal, February 1996

The study of electron emission from aluminum in the very low primary energy range using Monte Carlo simulations journal, February 2013

The vapor pressure and vaporization enthalpy of squalene and squalane by correlation gas chromatography journal, August 2019

X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92 journal, July 1993

Electron-impact ionization cross sections for polyatomic molecules, radicals, and ions conference, January 2000

Mean-free paths and scattering processes for 0.1–4500 eV electrons in saturated hydrocarbon films journal, September 1987

Nanofocusing, shadowing, and electron mean free path in the photoemission from aerosol droplets journal, August 2016

Photoelectron Spectroscopy book, January 2003

Experimental determination of the attenuation length of electrons in organic molecular solids: The example of PTCDA journal, May 2011

Ultrafast photoelectron spectroscopy of aqueous solutions journal, September 2019

Photoelectron angular distribution from free SiO 2 nanoparticles as a probe of elastic electron scattering journal, June 2017

Soft X-ray spectroscopy of nanoparticles by velocity map imaging journal, July 2017

Probing the Heterogeneous Ozonolysis of Squalene Nanoparticles by Photoemission journal, October 2016

Low-energy elastic electron scattering from ethylene: Elastic scattering and vibrational excitation journal, January 2016

Relaxation effects in C1s photoionisation of CO: a high resolution photoelectron study in the near-threshold region journal, December 1995

Two-dimensional charged particle image inversion using a polar basis function expansion journal, November 2004

Low-Energy Electron Transmission through Thin-Film Molecular and Biomolecular Solids journal, May 2007

Electron transport in solids for quantitative surface analysis journal, January 2001

Effective and absolute cross sections for low-energy (1-30 eV) electron interactions with condensed biomolecules journal, June 2018

A program for calculating relativistic elastic electron-atom collision data journal, May 1971

Elastic-electron-scattering effects on angular distributions in x-ray-photoelectron spectroscopy journal, August 1994

Attenuation lengths in organic materials journal, February 2011

Shape Resonances in K -Shell Photoionization of Diatomic Molecules journal, July 1975

Numerical Calculations of the Reflection of Electrons by Metals journal, October 1939

Photoemission from Liquid Aqueous Solutions journal, April 2006

Core‐level photoelectron and Auger shape‐resonance phenomena in CO, CO 2 , CF 4 , and OCS journal, March 1984

Elastic DCS for e+CH 4 collisions, 1.5-100 eV journal, February 1991

Low-energy electron-induced reactions in condensed matter journal, January 2010

Photoelectron spectroscopy of liquid water and aqueous solution: Electron effective attenuation lengths and emission-angle anisotropy journal, March 2010

Simulation of electron spectra for surface analysis (SESSA): a novel software tool for quantitative Auger-electron spectroscopy and X-ray photoelectron spectroscopy journal, January 2005

Electron-impact ionization cross sections of atmospheric molecules journal, January 1997

Maximum probing depth of low-energy photoelectrons in an amorphous organic semiconductor film journal, December 2014

Calculations of electron inelastic mean free paths. V. Data for 14 organic compounds over the 50-2000 eV range journal, March 1994

Photoemission from Liquid Aqueous Solutions journal, June 2006

Low-Energy Electron Transmission Through Thin-Film Molecular and Biomolecular Solids journal, July 2007

A program for calculating relativistic elastic electron-atom collision data journal, January 1984

Nanofocusing, shadowing, and electron mean free path in the photoemission from aerosol droplets text, January 2016

Hot-Electron Transport in Polymeric Dielectrics
journal, July 1984

Quantitative electron spectroscopy of surfaces: A standard data base for electron inelastic mean free paths in solids
journal, February 1979

Photoelectron Angular Distributions from Liquid Water: Effects of Electron Scattering
journal, October 2013

Angular Distribution of Photoelectrons
journal, January 1968

New model for electron‐impact ionization cross sections of molecules
journal, February 1996

The study of electron emission from aluminum in the very low primary energy range using Monte Carlo simulations
journal, February 2013

The vapor pressure and vaporization enthalpy of squalene and squalane by correlation gas chromatography
journal, August 2019

X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92
journal, July 1993

Electron-impact ionization cross sections for polyatomic molecules, radicals, and ions
conference, January 2000

Mean-free paths and scattering processes for 0.1–4500 eV electrons in saturated hydrocarbon films
journal, September 1987

Nanofocusing, shadowing, and electron mean free path in the photoemission from aerosol droplets
journal, August 2016

Photoelectron Spectroscopy
book, January 2003

Experimental determination of the attenuation length of electrons in organic molecular solids: The example of PTCDA
journal, May 2011

Ultrafast photoelectron spectroscopy of aqueous solutions
journal, September 2019

Photoelectron angular distribution from free SiO 2 nanoparticles as a probe of elastic electron scattering
journal, June 2017

Soft X-ray spectroscopy of nanoparticles by velocity map imaging
journal, July 2017

Probing the Heterogeneous Ozonolysis of Squalene Nanoparticles by Photoemission
journal, October 2016

Low-energy elastic electron scattering from ethylene: Elastic scattering and vibrational excitation
journal, January 2016

Relaxation effects in C1s photoionisation of CO: a high resolution photoelectron study in the near-threshold region
journal, December 1995

Two-dimensional charged particle image inversion using a polar basis function expansion
journal, November 2004

Low-Energy Electron Transmission through Thin-Film Molecular and Biomolecular Solids
journal, May 2007

Electron transport in solids for quantitative surface analysis
journal, January 2001

Effective and absolute cross sections for low-energy (1-30 eV) electron interactions with condensed biomolecules
journal, June 2018

A program for calculating relativistic elastic electron-atom collision data
journal, May 1971

Elastic-electron-scattering effects on angular distributions in x-ray-photoelectron spectroscopy
journal, August 1994

Attenuation lengths in organic materials
journal, February 2011

Shape Resonances in $K$ -Shell Photoionization of Diatomic Molecules
journal, July 1975

Numerical Calculations of the Reflection of Electrons by Metals
journal, October 1939

Photoemission from Liquid Aqueous Solutions
journal, April 2006

Core‐level photoelectron and Auger shape‐resonance phenomena in CO, CO 2 , CF 4 , and OCS
journal, March 1984

Elastic DCS for e+CH 4 collisions, 1.5-100 eV
journal, February 1991

Low-energy electron-induced reactions in condensed matter
journal, January 2010

Photoelectron spectroscopy of liquid water and aqueous solution: Electron effective attenuation lengths and emission-angle anisotropy
journal, March 2010

Simulation of electron spectra for surface analysis (SESSA): a novel software tool for quantitative Auger-electron spectroscopy and X-ray photoelectron spectroscopy
journal, January 2005

Electron-impact ionization cross sections of atmospheric molecules
journal, January 1997

Maximum probing depth of low-energy photoelectrons in an amorphous organic semiconductor film
journal, December 2014

Calculations of electron inelastic mean free paths. V. Data for 14 organic compounds over the 50-2000 eV range
journal, March 1994

Photoemission from Liquid Aqueous Solutions
journal, June 2006

Low-Energy Electron Transmission Through Thin-Film Molecular and Biomolecular Solids
journal, July 2007

A program for calculating relativistic elastic electron-atom collision data
journal, January 1984

Nanofocusing, shadowing, and electron mean free path in the photoemission from aerosol droplets
text, January 2016