Interaction of antiprotons with Rb atoms and a comparison of antiproton stopping powers of the atoms H, Li, Na, K, and Rb

Lühr, Armin; Fischer, Nicolas; Sáenz, Alejandro

doi:10.1007/s10751-009-0029-2

Cited by 2 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8(b). This is in contrast to the findings for alkali-metal atoms where the p loses energy mainly due to the bound-state excitation [28].…”

Section: B Excitation Energies and Ratio Sexc/s Ioncontrasting

confidence: 99%

“…A similar argument can be applied in the case of the stopping power of alkali-metal atoms in the case that only the valence electrons are considered. They show the same behavior for large impact energies [28] due to the fact that they also have a hydrogen-like potential at large r. However, the alkali stopping power coincides with the hydrogen results only for higher energies E > 4000 keV for Na, K, and Rb and E > 1000 keV for Li since the alkali-metal atoms are spatially more extended than hydrogen.…”

Section: Comparison Of S For H H2 and Hementioning

confidence: 60%

“…An advantage of this approach is the fact that within the space spanned by the basis functions used for the expansion of the timedependent scattering wave function the projectile-target interaction is treated in infinitely high order. In recent applications ionization and excitation cross sections as well as electron-energy spectra were determined for antiproton and proton collisions with alkali-metal atoms [27,28] and molecular hydrogen [4,25,29].…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Stopping power of antiprotons in H,H2, and He targets

Lühr

Sáenz

2009

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

The stopping power of antiprotons in atomic and molecular hydrogen as well as helium was calculated in an impact-energy range from 1 keV to 6.4 MeV. In the case of H2 and He the targets were described with a single-active electron model centered on the target. The collision process was treated with the close-coupling formulation of the impact-parameter method. An extensive comparison of the present results with theoretical and experimental literature data was performed in order to evaluate which of the partly disagreeing theoretical and experimental data are most reliable. Furthermore, the size of the corrections to the first-order stopping number, the average energy transferred to the target electrons, and the relative importance of the excitation and the ionization process for the energy loss of the projectile was determined. Finally, the stopping power of the H, H2, and He targets were directly compared revealing specific similarities and differences of the three targets.

show abstract

“…8(b). This is in contrast to the findings for alkali-metal atoms where the p loses energy mainly due to the bound-state excitation [28].…”

Section: B Excitation Energies and Ratio Sexc/s Ioncontrasting

confidence: 99%

Section: Comparison Of S For H H2 and Hementioning

confidence: 60%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Stopping power of antiprotons in H,H2, and He targets

Lühr

Sáenz

2009

Phys. Rev. A

Self Cite

View full text Add to dashboard Cite

show abstract

Imaging the Kramers–Henneberger atom

Morales

Richter

Patchkovskii

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Today laser pulses with electric fields comparable to or higher than the electrostatic forces binding valence electrons in atoms and molecules have become a routine tool with applications in laser acceleration of electrons and ions, generation of short wavelength emission from plasmas and clusters, laser fusion, etc. Intense fields are also naturally created during laser filamentation in the air or due to local field enhancements in the vicinity of metal nanoparticles. One would expect that very intense fields would always lead to fast ionization of atoms or molecules. However, recently observed acceleration of neutral atoms [Eichmann et al. (2009) Nature 461:1261-1264 at the rate of 10 15 m∕s 2 when exposed to very intense IR laser pulses demonstrated that substantial fraction of atoms remained stable during the pulse. Here we show that the electronic structure of these stable "laser-dressed" atoms can be directly imaged by photoelectron spectroscopy. Our findings open the way to visualizing and controlling bound electron dynamics in strong laser fields and reexamining its role in various strong-field processes, including microscopic description of high order Kerr nonlinearities and their role in laser filamentation [Béjot et al. (2010) Phys Rev Lett 104:103903].dressed atom | atomic stabilization | strong-field ionization | Kramers-Henneberger approximation

show abstract

Interaction of antiprotons with Rb atoms and a comparison of antiproton stopping powers of the atoms H, Li, Na, K, and Rb

Cited by 2 publications

References 11 publications

Stopping power of antiprotons in H,H2, and He targets

Stopping power of antiprotons in H,H2, and He targets

Imaging the Kramers–Henneberger atom

Contact Info

Product

Resources

About