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Autor: D Moessner, J Laubender, U Lauff, A Kulzer, U Sieber

Publikováno v: MTZ - Motortechnische Zeitschrift. 67:636-644

Vorgestellt werden die Ergebnisse einer systematischen Untersuchung der thermodynamischen, mechatronischen und physikalischen Randbedingungen des Direktstarts an einem 1,4-l-Motor mit Direkteinspritzung der ersten Generation mithilfe des Software-Ent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::080e2c07261719c31ff993fff38e23c3
https://doi.org/10.1007/bf03227382

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The effect of light on positron annihilation in natural diamond

Autor: J.P.F. Sellschop, Hermann Stoll, U. Lauff, Simon Henry Connell, Alfred Seeger, P. Castellaz, H. Schneider, A. Siegle, J. Kraft, Krish Bharuth-Ram, R.W.N. Nilen

Publikováno v: Applied Surface Science. 116:198-202

The age-momentum correlation (AMOC) technique of positron annihilation spectroscopy has been used to study a gamma-irradiated natural diamond sample. A light-induced reversible change in both the intensity and the lifetime of the trapped positron com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f908e5c22ddb2f5dce27a50b512eeec5
https://doi.org/10.1016/s0169-4332(96)01054-9

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Age-momentum correlation experiments on industrial grade diamond

Autor: P. Harmat, Krish Bharuth-Ram, Alfred Seeger, R.W.N. Nilen, H. Schneider, P. Wesolowski, A. Siegle, J.P.F. Sellschop, U. Lauff, Simon Henry Connell, Hermann Stoll

Publikováno v: Applied Surface Science. 116:268-272

Age-momentum correlation (AMOC) measurements as a function of temperature have been carried out on a large industrial grade diamond. The measurements were performed from room temperature up to 1120 K with the sample being heated by a pair of incandes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94d8310917b76f3c96acbe867aa59fa8
https://doi.org/10.1016/s0169-4332(96)01067-7

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Spin conversion of positronium in paramagnetic solutions studied by age-momentum-correlation method

Autor: I. Billard, Markus Koch, Janos Major, H. Schneider, A. Seeger, A. Siegle, U. Lauff, Hermann Stoll

Publikováno v: Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry, Springer Verlag, 1995, 190, pp.481-491

Correlated measurement of the lifetime and of the lineshape of the 511 keV annihilation radiation of positrons (age-momentum correlation, AMOC) has become a powerful tool for investigating reactions of positron or positronium in condensed matter as a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::118667e6bdb869dc48e666588683b4fc
https://doi.org/10.1007/bf02040030

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Polarized Positrons as Spin Detectors for Paramagnetic Centres in Solids

Autor: Hermann Stoll, M. Tongbhoyai, U. Lauff, Alfred Seeger, A. Siegle, Janos Major, Ch. Deckers, Karl Maier, H. Greif

Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1995, 05 (C1), pp.C1-81-C1-86. ⟨10.1051/jp4:1995109⟩

A novel technique for studying paramagnetic defects in insulators or semiconductors acting as positron traps is presented. The spin polarization of the paramagnetic electrons of such centres can be determined by investigating the annihilation of spin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3ca83876a1a886fabdabc5072f98231
https://doi.org/10.1051/jp4:1995109

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Measurement and significance ofΓγ/Γ for the 7117-keV4+level ofO18

Autor: P. G. Thirolf, B. Meltzow, Dietrich Habs, J. Gerl, U. Lauff, D. Schwalm, E. K. Warburton, J. Schirmer, C. Ender

Publikováno v: Physical Review C. 49:743-749

The excited 4[sup +] state at 7117 keV in [sup 18]O is studied via the [sup 12]C([sup 7]Li,[ital p][gamma])[sup 18]O reaction. We show that it is highly improbable that the state is energetically degenerate with a state of different decay properties

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10718fe1603a0df6db2224e937ceb4e3
https://doi.org/10.1103/physrevc.49.743

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The Kinetics of the Spin-Conversion of Positronium Measured by β+γ∆E Age-Momentum Correlation

Autor: U. Lauff, Hermann Stoll, Markus Koch, Karin Maier, P. Wesolowski, I. Bilard, G. Duplâtre, Alfred Seeger, J. Ch. Abbé, Janos Major

Publikováno v: Acta Physica Polonica A. 83:349-358

Age-momentum correlation (AMOC) measurements provide time-resolved information on the momentum distribution of annihilating electron— positron pairs through correlated determination of Doppler broadening (SE) of the 511 keV annihilation radiation l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12f50ac4cdd5e3e807f0c32e0e15452b
https://doi.org/10.12693/aphyspola.83.349

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Beam-based age-momentum correlation studies of positronium spin conversion in paramagnetic solutions and of positron trapping at defects in diamonds

Autor: H. Haricharun, P. Wesolowski, G. Duplâtre, Hermann Stoll, K. Bharuth-Ram, Elias Sideras-Haddad, Karin Maier, Janos Major, J.P.F. Sellschop, Markus Koch, Alfred Seeger, Isabelle Billard, J. Ch. Abbé, U. Lauff, Simon Henry Connell

Publikováno v: Slow Positron Beam Techniques for Solids and Surfaces
Slow Positron Beam Techniques for Solids and Surfaces: International Workshop 5
Slow Positron Beam Techniques for Solids and Surfaces: International Workshop 5, Aug 1992, Jackson Hole, United States. pp.179-189

Correlated measurements of the lifetime and of the Doppler broadening of the 511 keV annihilation radiation of positrons (Age‐Momentum Correlation, AMOC) using an MeV positron beam have become a powerful tool for investigating reactions of positron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e4adfbf9251e7c7319d65e1b96a0da
https://doi.org/10.1063/1.45490

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Positronium chemistry studied by AMOC measurements using a relativistic positron beam

Autor: Janos Major, I. Billard, Markus Koch, Alfred Seeger, Hermann Stoll, U. Lauff, A. Siegle, H. Schneider

Publikováno v: Journal de Physique IV Colloque
Journal de Physique IV Colloque, 1993, 03 (C4), pp.C4-69-C4-76. ⟨10.1051/jp4:1993407⟩
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1993, 03 (C4), pp.C4-69-C4-76. ⟨10.1051/jp4:1993407⟩

Beam-based Age-Momentum Correlation (β+γΔE AMOC) measurements using an MeV positron beam have become a powerful tool to study chemical reactions of positronium by time-domain observations of the different positron states tagged by the Doppler-broa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af503ad53c865afe5ae0d0eab2d36d20
https://hal.archives-ouvertes.fr/jpa-00251450/document

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