Electron-capture-to-continuum cusp in U88++N2 collisions

For the collision system U88++N2 at a collision energy of 90 MeV/u, the energy distribution of electrons being nonradiatively captured from the target into the projectile continuum has been measured under an angle of 0 with respect to the projectile beam axis. This measurement of the electron-captur...

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Detalles Bibliográficos
Autores: Hillenbrand, P. M., Hagmann, S., Jakubassa Amundsen, D. H., Monti, Juan Manuel, Banas, D., Blumenhagen, K. H., Brandau, C., Chen, W., Fainstein, Pablo Daniel, De Filippo, E., Gumberidze, A., Guo, D.L., Lestinsky, M., Litvinov, Yu. A., Müller, A., Rivarola, Roberto Daniel, Rothard, H., Schippers, S., Schöffler, M.S., Spillmann, U., Trotsenko, S., Zhu, X.L., Stöhlker, Th.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/127549
Acceso en línea:http://hdl.handle.net/11336/127549
Access Level:acceso abierto
Palabra clave:ELECTRON
CAPTURE-TO-CONTINUUM
HIGHLY-CHARGED-IONS
RELATIVISTIC
COLLISIONS
EXPERIMENTAL
THEORETICAL
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:For the collision system U88++N2 at a collision energy of 90 MeV/u, the energy distribution of electrons being nonradiatively captured from the target into the projectile continuum has been measured under an angle of 0 with respect to the projectile beam axis. This measurement of the electron-capture-to-continuum cusp with the highest effective projectile charge Zpeff=88 at a near-relativistic collision velocity of β≈0.41 is shown to be characterized by a strong asymmetry in the cusp shape. By comparing the data to measurements of the radiative-electron-capture-to-continuum cusp for the same collision system, the opposite asymmetry of the cusp is traced back to the varying underlying mechanisms. The experimental results are compared with the two theoretical calculations available for this process, one of them in the semirelativistic impulse approximation and the other in the nonrelativistic continuum-distorted-wave approach. A corresponding fully relativistic treatment may be motivated by the presented experimental data.

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