Abstract
| Original language | English |
|---|---|
| Number of pages | 6 |
| Journal | Physical Review Letters |
| DOIs | |
| Publication status | Published - 15 Oct 2019 |
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Keywords
- First-principles calculations
- atoms
- Spin-orbit coupling
- Single- and few-photon ionization & excitation
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Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms. / Wragg, Jack; Clarke, Daniel D. A.; Armstrong, Gregory S. J.; Brown, Andrew C.; Ballance, Connor P.; Van Der Hart, Hugo W.
In: Physical Review Letters, 15.10.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms
AU - Wragg, Jack
AU - Clarke, Daniel D. A.
AU - Armstrong, Gregory S. J.
AU - Brown, Andrew C.
AU - Ballance, Connor P.
AU - Van Der Hart, Hugo W.
PY - 2019/10/15
Y1 - 2019/10/15
N2 - We use R-Matrix with Time-dependence (RMT) theory, with spin-orbit effects included, to study krypton irradiated by two time-delayed XUV ultrashort pulses. The first pulse excites the atom to 4s$^2$4p$^5$5s. The second pulse then excites 4s4p65s autoionising levels, whose population can be observed through their subsequent decay. By varying the time delay between the two pulses, we are able to control the excitation pathway to the autoionising states. The use of cross-polarised light pulses allows us to isolate the two-photon pathway, with one photon taken from each pulse.
AB - We use R-Matrix with Time-dependence (RMT) theory, with spin-orbit effects included, to study krypton irradiated by two time-delayed XUV ultrashort pulses. The first pulse excites the atom to 4s$^2$4p$^5$5s. The second pulse then excites 4s4p65s autoionising levels, whose population can be observed through their subsequent decay. By varying the time delay between the two pulses, we are able to control the excitation pathway to the autoionising states. The use of cross-polarised light pulses allows us to isolate the two-photon pathway, with one photon taken from each pulse.
KW - First-principles calculations
KW - atoms
KW - Spin-orbit coupling
KW - Single- and few-photon ionization & excitation
U2 - 10.1103/PhysRevLett.123.163001
DO - 10.1103/PhysRevLett.123.163001
M3 - Article
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
ER -