Multiple ionization of Ne, Ar, Kr, and Xe by different ions

1. CAARI 2010-Fort Worth Multiple ionization of Ne, Ar, Kr, and Xe by different ions C. C. Montanari1, J. E. Miraglia1 and E. Montenegro2 1Instituto de Astronomía y Física del Espacio and Universidad de Buenos Aires, Buenos Aires, Argentina 2Instituto de Física, Universidade Federal do Rio de Janeiro, Brazil

2. H+ + Kr

3. -18 10 sec projectile

4. photon 3+ photon 10-15 sec

5. -5 10 sec 6+ PCI=time delayed electron emision Independent of the projectile Multiple ionization data includes PCI

6. no of Auger electrons Single ionization of an electron in the subshellm Fm,n SnFm,n = 1 Ne 2p 2s 1s Krause & Carlson in the 60s Landers et al 2009, Phys. Rev Lett PCI only subvalence electrons Brünken et al 2002, Phys. Rev A Tamenori et al 2004, J. Phys. B Hikosaka et al 2004, Phys. Rev. A Hayaishi et al 2002, J.Phys. B

7. ò s = p 2 bP ( b ) db q q independent electron model Binomial distribution æ ö N N å Õ ç ÷ - i = - q N q P ( b ) p ( 1 p ) i i i ç ÷ q i i q è ø + + + = q q ... q i 1 i = q 1 2 N single ionization probability per electron for the i atomic subshell Direct multiple ionization Cross section for ionization of q target electrons

8. Sn Fi,n= 1 æ ö N N å Õ ç ÷ i = P ( b ) ( pix1)qi - - N q ç ÷ ( 1 p ) i i q q i è ø + + + = = q q ... q q i 1 i 1 2 N Multiple ionization including PCI Binomial distribution

9. Sn Fi,n= 1 æ ö N N å Õ ç ÷ i = P ( b ) ( pi SnFi,n)qi - - N q ç ÷ ( 1 p ) i i q q i è ø + + + = = q q ... q q i 1 i 1 2 N PCI Pa (b)= SP P PCI (ai) including PCI a1s + a2s + …= a i Number of total emitted electron (direct+PCI) P PCI 1s (2) = P1s (1) F1s,1 + P1s (2)[F1s,0 ]2 Montanari et al J. Phys B 43, 165201 (2010) Multiple ionization including PCI Binomial distribution

10. Ne

11. Ar

12. Kr

13. Xe

14. Concluding remarks • Multiple ionization with CDW-EIS and first Born approx.

15. Concluding remarks • Multiple ionization with CDW-EIS and first Born approx. • Auger type contributions

16. Concluding remarks • Multiple ionization with CDW-EIS and first Born approx. • Auger type contributions • Kr and Xe for the first time(within independent electron model)

17. Concluding remarks • Multiple ionization with CDW-EIS and first Born approx. • Auger type contributions • Kr and Xe for the first time(within independent electron model) • Ar and Kr CDW-EIS very good for E>200 keV/amu H impact, very good! Born He+, little high for E<70 keV • Ne CDW-EIS good for E>300 keV/amu Born good even intermediate energies for H+ not so good for He2+ • Xe good for H+ impact but not for He+ more experimental data is needed!

18. Concluding remarks • Multiple ionization with CDW-EIS and first Born approx. • Auger type contributions • Kr and Xe for the first time(within independent electron model) • Ar and Kr CDW-EIS very good for E>200 keV/amu H impact, very good! Born He+, little high for E<70 keV • Ne CDW-EIS good for E>300 keV/amu Born good even intermediate energies for H+ not so good for He2+ underestimate PCI for H+ + Ne (excitation-ionization channel? Shake-off?) • Xe good for H+ impact but not for He+ more experimental data is needed!

19. Buenos Aires, Argentina Thank you!