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Topic Area: Surface Physics

Displaying records 31 to 40 of 137 records.
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31. Calculations of Electron Inelastic Mean Free Paths (IMFPs) V. Data for 14 Organic Compounds over the 50-2000 eV Range
Topic: Surface Physics
Published: 9/14/1994
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We report calculations of electron inelastiv mean free paths (IMFPs) of 50-2000 eV electrons for a group of 14 organic compounds: 26-n-paraffin, adenine, {beta}-carotene, bovine plasma albumin, deoxyribonucleic acid, diphenylhexatriene, guanine, kapt ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620435

32. Effects of Elastic and Inelastic Electron-scattering on Quantitative Surface Analysis by A.E.S. and X.P.S
Topic: Surface Physics
Published: 1/1/1994
Authors: Cedric John Powell, E Jablonski, Shigeo Tanuma, David R. Penn
Abstract: A review is given that describes the complications due to elastic and inelastic electron scattering in quantitative surface analyses by Auger-electron spectroscopy and x-ray photoelectron spectroscopy. Four principal topics are addressed. First, th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620419

33. Electron Inelastic Mean Free Paths in Organic Materials Especially for Polyethylene and Guanine
Topic: Surface Physics
Published: 1/1/1994
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We have calculated the electron inelastic mean free paths (IMFPs) in the range 50-2000 eV for 14 different organic compounds using the Penn algorithm. We report here mainly the calculated values of IMFPs for polyethylene and guanine, because their d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620424

34. Calculations of Electron Inelastic Mean Free Paths (IMFPs) IV. Evaluation of Calculated IMFPs and of the Predictive IMFP Formula Tpp-2 for Electron Energies between 50 and 2000 eV
Topic: Surface Physics
Published: 1/1/1993
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We have made additional evaluations of the electron inelastic mean free paths (IMFPs) and of the predictive IMFP formula TPP-2 presented in papers II and III of this series. Comparisons have been made with other formulae for the IMFPs and electron a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620417

35. Use of Sum Rules on the Energy-Loss Function for the Evaluation of Experimental Optical Data
Topic: Surface Physics
Published: 1/1/1993
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We present an evaluation of optical data for Al, Si, Ti, Mo, W, and Ir based on two sum rules for the energy-loss function, the familiar f-sum rule and another sum rule based on a limiting form of the Kramers-Kronig integral. These sum rules were use ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620423

36. Inelastic Mean Free Paths of Low Energy Electrons in Solids
Topic: Surface Physics
Published: 1/1/1992
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We present a summary of recent calculations of the electron inelastic mean free paths (IMFPs) of 50-2000 eV electrons in a group of 27 elements and 15 inorganic compounds. These calculations are based in part on experimental optical data to represen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620392

37. Calculations of Electron Inelastic Mean Free Paths II. Data for 27 Elements over the 50-2000 eV Range
Topic: Surface Physics
Published: 1/1/1991
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We report calculations of electron inelastic mean free paths (IMFPs) for 50-2000 eV electrons in a group of 27 elements (C, Mg, Al, Si, Ti, V, Cr, Fe, Ni, Cu, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Hf, Ta, W, Re, Os, Ir, Pt, Au and Bi). This work extends our ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620394

38. Calculations of Electron Inelastic Mean Free Paths III. Data for 15 Inorganic Compounds over the 50-2000 eV Range
Topic: Surface Physics
Published: 1/1/1991
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We report calculations of electron inelastic mean free paths (IMFPs) of 50-2000 eV electrons in a group of 15 inorganic compounds (Al^d2^O^d3^, GaAs, GaP, InAs, InP, InSb, KCl, LiF, NaCl, PbS, PbTe, SiC, Si^d3^N^d4^, SiO^d2^, ZnS). As was found in s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620391

39. Spin Polarized Metastable Atom He De-excitation, Theory
Topic: Surface Physics
Published: 1/1/1991
Authors: David R. Penn, S Apell
Abstract: Metastable spin-polarized He* atoms incident on a Ni surface undergo deexcitation in a process which yields electron from the Ni. The number produced is observed to depend on the relative spin of teh Ni and the He* atoms. The normalized difference i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620377

40. Electron Inelastic Mean Free Paths in Solids at Low Energies
Topic: Surface Physics
Published: 1/1/1990
Authors: Shigeo Tanuma, Cedric John Powell, David R. Penn
Abstract: We have calculated electron inelastic mean free paths (IMFPs) for 50-200 eV electrons in 31 materials (27 elements and 4 compounds). These calculations extend those previously reported for 200-2000 eV electrons in the same materials but avoid an a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620371



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