Výsledky vyhledávání - "M. D. Chrysler"

Akademický článek

Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation

Autor: V. A. Chirayath, V. Callewaert, A. J. Fairchild, M. D. Chrysler, R. W. Gladen, A. D. Mcdonald, S. K. Imam, K. Shastry, A. R. Koymen, R. Saniz, B. Barbiellini, K. Rajeshwar, B. Partoens, A. H. Weiss

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Auger processes are at the core of electron emission in solid-state physics, however measuring the spectra of electrons emitted solely as a result of Auger transitions remains a challenge. Here, the authors measure the electron energy spectrum in gra

Externí odkaz: https://doaj.org/article/9c053af230f64e04a827e9fd401cffda

Zobrazit plný text záznamu

Positronium formation in graphene and graphite

Autor: A. J. Fairchild, Alex H. Weiss, M. D. Chrysler, Varghese Anto Chirayath, R. W. Gladen, A. R. Koymen

Positronium (Ps) formation on the surface of clean polycrystalline copper (Cu), highly oriented pyrolytic graphite (HOPG) and multi layer graphene (MLG) grown on a polycrystalline copper substrate has been investigated as a function of incident posit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48c7d63c1977125d6188250d2dc3d97c

Zobrazit plný text záznamu

Application of Doppler Broadened Gamma Spectroscopy to Study the Surface of Graphene

Autor: A. R. Koymen, Alex H. Weiss, A. J. Fairchild, M. D. Chrysler, Philip A. Sterne, R. W. Gladen, Varghese Anto Chirayath

We present Doppler broadened gamma spectra, obtained using the newly developed advanced positron beam at the University of Texas at Arlington, from a sample consisting of 6 to 8 layers of graphene (MLG) on polycrystalline Cu. The kinetic energy of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d9adc8db2300b47185e5828e1540201

Zobrazit plný text záznamu

A multi-stop time-of-flight spectrometer for the measurement of positron annihilation-induced electrons in coincidence with the Doppler-shifted annihilation gamma photon

Autor: A D McDonald, Varghese Anto Chirayath, Zheng Hui Lim, A. J. Fairchild, R. W. Gladen, S. Mukherjee, P.V. Joglekar, B. M. Barnett, Alex H. Weiss, T. N. Shead, M. D. Chrysler, A. R. Koymen, Suman Satyal, R. G. Greaves, N. K. Byrnes

Publikováno v: Review of Scientific Instruments. 91:033903

Here we describe an advanced multi functional, variable-energy positron beam system capable of measuring the energies of multiple positron-induced electrons in coincidence with the Doppler-shifted gamma photon resulting from the annihilation of the c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96b666642c442a49acec786b64d7380d
https://doi.org/10.1063/1.5140789

Zobrazit plný text záznamu

Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation

Autor: R. W. Gladen, S K Imam, B. Barbiellini, Vincent Callewaert, Krishnan Rajeshwar, Bart Partoens, K. Shastry, A. J. Fairchild, Alex H. Weiss, M. D. Chrysler, A D McDonald, A. R. Koymen, Varghese Anto Chirayath, Rolando Saniz

Publikováno v: Nature Communications
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Nature communications
BASE-Bielefeld Academic Search Engine

Auger processes involving the filling of holes in the valence band are thought to make important contributions to the low-energy photoelectron and secondary electron spectrum from many solids. However, measurements of the energy spectrum and the effi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b60a329def558f325c64f489fa25901
https://pubmed.ncbi.nlm.nih.gov/28703225

Zobrazit plný text záznamu

Akademický článek

Positron induced electron emission from graphene.

Autor: V A Chirayath, R W Gladen, K Shastry, M D Chrysler, A J Fairchild, A D McDonald, A R Koymen, B Barbiellini, A H Weiss