Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Missouri University of Science and Technology

2013

Triple differential cross sections

Articles 1 - 2 of 2

Full-Text Articles in Physical Sciences and Mathematics

A Dynamical (E,2e) Investigation Of The Structurally Related Cyclic Ethers Tetrahydrofuran, Tetrahydropyran, And 1,4-Dioxane, J. D. Builth-Williams, Susan M. Bellm, Luca Chiari, Penny A. Thorn, Darryl B. Jones, Hari Chaluvadi, Don H. Madison, Chuangang Ning, B. Lohmann, Gabriel Da Silva, Michael J. Brunger Jun 2013

A Dynamical (E,2e) Investigation Of The Structurally Related Cyclic Ethers Tetrahydrofuran, Tetrahydropyran, And 1,4-Dioxane, J. D. Builth-Williams, Susan M. Bellm, Luca Chiari, Penny A. Thorn, Darryl B. Jones, Hari Chaluvadi, Don H. Madison, Chuangang Ning, B. Lohmann, Gabriel Da Silva, Michael J. Brunger

Physics Faculty Research & Creative Works

Triple differential cross section measurements for the electron-impact ionization of the highest occupied molecular orbitals of tetrahydropyran and 1,4-dioxane are presented. For each molecule, experimental measurements were performed using the (e,2e) technique in asymmetric coplanar kinematics with an incident electron energy of 250 eV and an ejected electron energy of 20 eV. With the scattered electrons being detected at -5°, the angular distributions of the ejected electrons in the binary and recoil regions were observed. These measurements are compared with calculations performed within the molecular 3-body distorted wave model. Here, reasonable agreement was observed between the theoretical model and the …


Low Energy (E,2e) Coincidence Studies Of Nh₃: Results From Experiment And Theory, Kate L. Nixon, Andrew James Murray, Hari Chaluvadi, Chuangang Ning, James Colgan, Don H. Madison May 2013

Low Energy (E,2e) Coincidence Studies Of Nh₃: Results From Experiment And Theory, Kate L. Nixon, Andrew James Murray, Hari Chaluvadi, Chuangang Ning, James Colgan, Don H. Madison

Physics Faculty Research & Creative Works

Experimental and theoretical triple differential cross sections (TDCS) from ammonia are presented in the low energy regime with outgoing electron energies from 20 eV down to 1.5 eV. Ionization measurements from the 3a1, 1e1, and 2a1 molecular orbitals were taken in a coplanar geometry. Data from the 3a1 and 1e1 orbitals were also obtained in a perpendicular plane geometry. The data are compared to predictions from the distorted wave Born approximation and molecular-three-body distorted wave models. The cross sections for the 3a1 and 1e1 orbitals that have p-like character were found …