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An EXAFS investigation of chromocene on silica using empirical, semi-empirical and ab initio methods

Autor: A.F. Masters, P.J. Ellis, Thomas Maschmeyer, Anthony K. Smith, R.W. Joyner, D.A. Niles

Publikováno v: Journal of Molecular Catalysis A: Chemical. 111:297-305

The average chromium environment on the surface of a chromocene/silica ethylene polymerisation catalyst has been determined by Cr-EXAFS to be [( η 5 -C 5 H 5 )Cr( μ -OSi)(OSi)] 2 .

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d61aadaaff9e8df6518594aff1e5ad4
https://doi.org/10.1016/1381-1169(96)00012-x

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Equipment and methodology for high precision, high throughput 14C AMS analyses at ANTARES

Autor: Ewan Lawson, Claudio Tuniz, P.J. Ellis, Geraldine Jacobsen, Michael Hotchkis, G.C. Watt, Andrew Smith, David Fink, M. Shying, J Fallon

Publikováno v: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 92:122-128

The original Rutgers FN tandem accelerator has been modified for high-precision high-throughput AMS analyses at the ANTARES AMS Center. The status of this work and future plans are discussed, with emphasis on 14 C. Isotopic ratios are measured at ANT

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fb9e3a3adb8f3f5f283e2c36ae080f89
https://doi.org/10.1016/0168-583x(94)95990-0

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Hermitian effective interactions derived from the Paris and Bonn potentials

Autor: P.J. Ellis, T.T.S. Kuo, Ryoji Okamoto, H. Kumagaie, Zibang Li, Kenji Suzuki, Jifa Hao

Publikováno v: Nuclear Physics A. 560:621-632

The relationship between the non-hermitian (R) and hermitian (W) forms of the effective interaction and the corresponding eigenvectors is discussed. We calculate the exact hermitian effective interaction in the sd and pf shells using the Bonn-A and P

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f907d9a1590605765587f9ef95b1633
https://doi.org/10.1016/0375-9474(93)90037-x

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Origin of and bound on the non-Hermiticity of effective interactions

Autor: K. Suzuki, T.T.S. Kuo, Jifa Hao, Ryoji Okamoto, Zibang Li, P.J. Ellis

Publikováno v: Physics Letters B. 308:1-5

We show that the degree of non-Hermiticity of the standard effective interaction, R , is determined by the eigenvalues, μ 2 , of the operator ω † ω , where ω is the operator which maps the model space states onto the excluded space. Both a form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::daf7ef5f7470ad630e80c3862fb0415e
https://doi.org/10.1016/0370-2693(93)90592-6

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Normalization for the random phase approximation with energy-dependent interactions

Autor: G.A. Rijsdijk, P.J. Ellis, W.J.W. Geurts, K. Allaart, T.T.S. Kuo, Jifa Hao

Publikováno v: Allaart, K, Ellis, P J, Geurts, W J W, Hao, J, Kuo, T T S & Rijsdijk, G A 1993, ' Normalization for the random phase approximation with energy-dependent interactions ', Physical Review C, vol. 47, no. 2, pp. 895-898 . https://doi.org/10.1103/PhysRevC.47.895
Physical Review C, 47(2), 895-898. American Physical Society

Different normalization conditions for random phase approximation amplitudes have been obtained recently for use with energy-dependent interactions. These conditions are shown to be equivalent. A third method, which has a wider applicability, is also

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac074246947055fc73f6cf7f2a8493fe
https://hdl.handle.net/1871/10053

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