Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms

Jack Wragg; Daniel D. A. Clarke; Gregory S. J. Armstrong; Andrew C. Brown; Connor P. Ballance; Hugo W. Van Der Hart

doi:10.1103/PhysRevLett.123.163001

Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms

Jack Wragg, Daniel D. A. Clarke, Gregory S. J. Armstrong, Andrew C. Brown, Connor P. Ballance, Hugo W. Van Der Hart

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

255 Downloads (Pure)

Abstract

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.

Original language	English
Article number	163001
Pages (from-to)	1
Journal	Physical Review Letters
Volume	123
DOIs	https://doi.org/10.1103/PhysRevLett.123.163001
Publication status	Published - 15 Oct 2019

Keywords

First-principles calculations
atoms
Spin-orbit coupling
Single- and few-photon ionization & excitation

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1103/PhysRevLett.123.163001Licence: Unspecified

Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms
© 2019 American Physical Society. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 387 KBLicence: Unspecified

1 Finished
1 Active

R1066TCP: UK Atomic, Molecular and Optical physics R-matrix consortium (UK AMOR)
Brown, A. (PI)
18/06/2019 → …
Project: Research
R1725TCP: ARMouReD: Atomic R-matrix Method for Relativistic Dynamics
Van Der Hart, H. (PI), Ballance, C. (CoI) & Brown, A. (CoI)
08/02/2017 → 31/07/2020
Project: Research

Data for Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms
Wragg, J. (Creator), Clarke, D. (Creator), Armstrong, G. (Creator), Brown, A. (Creator), Ballance, C. (Creator) & Van Der Hart, H. (Creator), Queen's University Belfast, 2019
DOI: 10.17034/660e22b1-4130-4a51-95c0-0781c6061f1d
Dataset

File

Ultrafast Atomic Dynamics in Arbitrary Light Fields
Clarke, D. (Author), Van Der Hart, H. (Supervisor) & Brown, A. (Supervisor), Jul 2020
Student thesis: Doctoral Thesis › Doctor of Philosophy

File

Connor Ballance
- C.Ballancequb.acuk
- School of Mathematics and Physics - Professor
- Astrophysics Research Centre (ARC)
Person: Academic
Andrew Brown
- andrew.brownqub.acuk
- School of Mathematics and Physics - Research Software Engineer
- Centre for Light-Matter Interaction (CLMI)
Person: Research

13 Citations
1 Software

The R-matrix with time dependence (RMT) code
Brown, A. (Developer), Van Der Hart, H. (Developer), Armstrong, G. (Developer), Wragg, J. (Developer), Clarke, D. (Developer), Gorfinkiel, J. (Developer), Benda, J. (Developer) & Masin, Z. (Developer), 11 Nov 2019
Research output: Non-textual form › Software

Cite this

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title = "Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms",

abstract = "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.",

keywords = "First-principles calculations, atoms, Spin-orbit coupling, Single- and few-photon ionization & excitation",

author = "Jack Wragg and Clarke, {Daniel D. A.} and Armstrong, {Gregory S. J.} and Brown, {Andrew C.} and Ballance, {Connor P.} and {Van Der Hart}, {Hugo W.}",

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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

SN - 0031-9007

VL - 123

SP - 1

JO - Physical Review Letters

JF - Physical Review Letters

M1 - 163001

ER -

Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Projects

R1066TCP: UK Atomic, Molecular and Optical physics R-matrix consortium (UK AMOR)

R1725TCP: ARMouReD: Atomic R-matrix Method for Relativistic Dynamics

Datasets

Data for Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms

Student theses

Ultrafast Atomic Dynamics in Arbitrary Light Fields

Profiles

Connor Ballance

Andrew Brown

Research output

The R-matrix with time dependence (RMT) code

Cite this