Metadata
Title
Andrew Brown
Category
undergraduate
UUID
39d4796577ed43d399f237bf7e4ee7c2
Source URL
https://pure.qub.ac.uk/en/persons/andrew-brown/
Parent URL
https://www.qub.ac.uk/courses/undergraduate/applied-mathematics-physics-bsc-gf13...
Crawl Time
2026-03-23T19:02:21+00:00
Rendered Raw Markdown 
# Andrew Brown

**Source**: https://pure.qub.ac.uk/en/persons/andrew-brown/
**Parent**: https://www.qub.ac.uk/courses/undergraduate/applied-mathematics-physics-bsc-gf13/

[View Scopus Profile](https://www.scopus.com/authid/detail.uri?authorId=57197536997)

# Andrew Brown

Dr

- Reader, [School of Mathematics and Physics](https://pure.qub.ac.uk/en/organisations/school-of-mathematics-and-physics/)
- [Centre for Light-Matter Interaction (CLMI)](https://pure.qub.ac.uk/en/organisations/centre-for-light-matter-interaction-clmi/)

[https://orcid.org/0000-0001-5652-1495](https://orcid.org/0000-0001-5652-1495 "Orcid")

- Email[andrew.brown@qub.ac.uk](#)

- Room 01.005 - Old Physics

  United Kingdom

Accepting PhD Students

2012Research output 2012: 4Research output 2013: 1Research output 2014: 2Research output 2015: 3Research output 2016: 4Projects 2017: 2Research output 2017: 1Research output 2018: 3Projects 2019: 1Research output 2019: 5Research output 2020: 9Research output 2021: 1Research output 2022: 3Research output 2023: 4Research output 2025: 6Research output 2026: 12026

Research activity per year

## Personal profile

### Research Interests

Advances in laser technology have facilitated the experimental analysis of atomic structure and electron dynamics in unprecedented detail. Typically, now, we are interested in dynamics which occur on the attosecond scale (1 as = 10-18 s), which is the fundamental time scale of electronic motion in the atom. These dynamics underpin macroscopic processes such as photosynthesis and chemical reactions more generally.

Theoretical methods capable of describing attosecond scale electronic motion typically adopt a classical approach where an electron is driven by a laser field in the net potential of the residual ion. However, the RMT (R-Matrix with Time) method pioneered at QUB allows us to address the interaction of all the electrons in an atomic system. It is these multielectron interactions which mediate ultrafast dynamics and thus it is imperative to address them accurately.

For the last ten years my research has focused on extracting experimental observables from the detailed ab-initio calculations performed with RMT. To this end I have investigated several cutting-edge experimental schemes using the RMT approach, including attosecond transient absorption spectroscopy, strong-field rescattering, XUV initiated high harmonic generation and photoelectron spectroscopy.

Recently my work has been addressed at developing the software tools used for this research. Historically, the scientific computing community has focused on delivering immediate scientific insight, oftentimes at the expense of sustainable development. This has resulted in software that is disjointed, difficult to use, and ultimately unsustainable. With the award of my recent EPSRC Research Software Engineering fellowship I am hoping to address these issues and ensure that the incredible software developed by my colleagues delivers scientific impact for decades to come.

## Fingerprint

Dive into the research topics where Andrew Brown is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

- [5](https://pure.qub.ac.uk/en/persons/andrew-brown/similar/)
  Similar Profiles

- Time
  Chemistry
- Electrons
  Physics
- Electron Particle
  Chemistry
- Harmonics
  Physics
- Atom
  Chemistry
- Photoionization
  Chemistry
- Atoms
  Physics
- Spectra
  Chemistry

[View full fingerprint](https://pure.qub.ac.uk/en/persons/andrew-brown/fingerprints/)

## Collaborations and top research areas from the last five years

Recent external collaboration on country/territory level. Dive into details by clicking on the dots or Select a country/territory from the list\

# Dive into details

Select a country/territory to view shared publications and projects

Close

[Explore network further](https://pure.qub.ac.uk/en/persons/andrew-brown/network/)

## Projects

- [1](https://pure.qub.ac.uk/en/persons/andrew-brown/projects/?status=RUNNING)
  Active
- [2](https://pure.qub.ac.uk/en/persons/andrew-brown/projects/?status=FINISHED)
  Finished

- ### [R1066TCP: UK Atomic, Molecular and Optical physics R-matrix consortium (UK AMOR)](https://pure.qub.ac.uk/en/projects/epsrc-via-ucl/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (PI)

  18/06/2019 → …

  Project: Research

  - Time
  - Atom
  - Photoionization
  - Electron Particle
  - Electrons
- ### [R1728TCP: R-matrix Suites for Multielectron Attosecond Dynamics in Atoms and Molecules Irradiated by Arbitrarily Polarised Light](https://pure.qub.ac.uk/en/projects/epsrc-epp0221461-r-matrix-suites/)

  [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) (PI) & [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (CoI)

  08/05/2017 → 28/02/2020

  Project: Research

  - Time
  - Electron Particle
  - Photoionization
  - Electrons
  - Procedure
- ### [R1725TCP: ARMouReD: Atomic R-matrix Method for Relativistic Dynamics](https://pure.qub.ac.uk/en/projects/epsrc-epp0139531-armoured/)

  [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) (PI), [Ballance, C.](https://pure.qub.ac.uk/en/persons/connor-ballance/) (CoI) & [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (CoI)

  08/02/2017 → 31/07/2020

  Project: Research

  - Time
  - Electron Particle
  - Atom
  - Molecule
  - Schrodinger Equation

## Research output

- [31](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Farticle)
  Article
- [3](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Fabstract)
  Meeting abstract
- [2](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontobookanthology%2Fconference)
  Conference contribution
- [2](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Fcomment)
  Comment/debate
- 5
  More

  - [**2** Letter](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Fletter)
  - [**1** Abstract](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontoconference%2Fabstract)
  - [**1** Poster](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontoconference%2Fposter)
  - [**1** Editorial](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fcontributiontojournal%2Feditorial)
  - [**1** Software](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/?type=%2Fdk%2Fatira%2Fpure%2Fresearchoutput%2Fresearchoutputtypes%2Fnontextual%2Fsoftware)

- ### [Using Möbius for automated assessment in mathematics: a case study](https://pure.qub.ac.uk/en/publications/using-m%C3%B6bius-for-automated-assessment-in-mathematics-a-case-study/)

  [Tribello, G. A.](https://pure.qub.ac.uk/en/persons/gareth-tribello/), [Grüning, M.](https://pure.qub.ac.uk/en/persons/myrta-gr%C3%BCning/), [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/), [Barnes, D.](https://pure.qub.ac.uk/en/persons/david-barnes/), Dore, T. & [Keys, P. H.](https://pure.qub.ac.uk/en/persons/peter-keys/), 08 Jan 2026, (Early online date) In: [Teaching Mathematics and Its Applications.](#) 22 p., hraf020.

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

  Open Access

  File

  - Student Engagement
  - Assessment Activity
  - Case Study
  - Failure Rate

  10
  Downloads
  (Pure)
- ### [Heterodyne analysis of high-order partial waves in attosecond photoionization of Helium](https://pure.qub.ac.uk/en/publications/heterodyne-analysis-of-high-order-partial-waves-in-attosecond-pho/)

  Jiang, W., Roantree, L., Han, L., Ji, J., Xu, Y., Zuo, Z., Wörner, H. J., Ueda, K., [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/), [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/), Gong, X. & Wu, J., 03 Jan 2025, In: [Nature Communications.](#) 16, 381.

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

  Open Access

  File

  - Photoionization
  - Angular Distribution
  - Photoelectron
  - Rydberg State
  - Anisotropy

  [6](https://www.scopus.com/pages/publications/85213989693#tab=citedBy)
  Citations
  (Scopus)

  34
  Downloads
  (Pure)
- ### [Impact of electron correlation on photoelectron angular distributions in sequential double photoionization of Ne+](https://pure.qub.ac.uk/en/publications/impact-of-electron-correlation-on-photoelectron-angular-distribut/)

  [Lavery, H.](https://pure.qub.ac.uk/en/persons/holly-lavery/), [Brown, A. C.](https://pure.qub.ac.uk/en/persons/andrew-brown/) & [van der Hart, H. W.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/), 01 Dec 2025, In: [Physical Review A.](#) 112, 6, 11 p., 063102 .

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

  Open Access

  File

  - Free Electron

  5
  Downloads
  (Pure)
- ### [Phase evolution of strong-field ionization](https://pure.qub.ac.uk/en/publications/phase-evolution-of-strong-field-ionization-2/)

  Hutcheson, L., Hartmann, M., Borisova, G., Birk, P., Hu, S., Ott, C., Pfeifer, T., [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) & [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/), 07 Jul 2025.

  Research output: Contribution to conference › Poster

  File

  - Field Ionization
  - Xenon
  - Absorption Spectroscopy
  - Time Dependence
  - Excited State
- ### [Phase evolution of strong-field ionization](https://pure.qub.ac.uk/en/publications/phase-evolution-of-strong-field-ionization/)

  Hutcheson, L., Hartmann, M., Borisova, G. D., Birk, P., Hu, S., Ott, C., Pfeifer, T., [van der Hart, H. W.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) & [Brown, A. C.](https://pure.qub.ac.uk/en/persons/andrew-brown/), 24 Jun 2025, In: [Physical Review Research.](#) 7, 2, 6 p., L022074.

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

  Open Access

  File

  - Delay Time
  - Shape Parameter
  - Complex Plane
  - Phase Shift
  - Excited State

  12
  Downloads
  (Pure)

[View all 47 research outputs](https://pure.qub.ac.uk/en/persons/andrew-brown/publications/)

## Datasets

- ### [Dataset for "RABBITT-HOP: Reconstruction of Attosecond Beating By Interference of Two-photon Transitions with Higher-Order Processes"](https://pure.qub.ac.uk/en/datasets/dataset-for-rabbitt-hop-reconstruction-of-attosecond-beating-by-i/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Creator), Queen's University Belfast, 19 Jun 2025

  DOI: [10.17034/67b30434-7abe-41ea-83da-1247b34e4a33](https://doi.org/10.17034/67b30434-7abe-41ea-83da-1247b34e4a33)

  Dataset

  File
- ### [Intensity Averaging Data for Stimulating electron competition with extreme-ultraviolet-initiated high-order harmonic generation](https://pure.qub.ac.uk/en/datasets/intensity-averaging-data-for-stimulating-electron-competition-wit/)

  Hutcheson, L. (Creator) & [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Supervisor), Queen's University Belfast, 28 Nov 2023

  DOI: [10.17034/adbed237-750d-4c9c-95a4-1b19f5b8fc6d](https://doi.org/10.17034/adbed237-750d-4c9c-95a4-1b19f5b8fc6d)

  Dataset

  File
- ### [Dataset for "Enhancing spin polarization using ultrafast angular streaking"](https://pure.qub.ac.uk/en/datasets/dataset-for-enhancing-spin-polarization-using-ultrafast-angular-s/)

  Armstrong, G. (Creator), Clarke, D. (Contributor), Wragg, J. (Contributor), Benda, J. (Contributor), [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Contributor) & [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) (Contributor), Queen's University Belfast, 30 Apr 2021

  DOI: [10.17034/9f15c023-22e3-4a3e-abdc-a20aa09edd75](https://doi.org/10.17034/9f15c023-22e3-4a3e-abdc-a20aa09edd75)

  Dataset

  File
- ### [Electron correlation and short-range dynamics in attosecond angular streaking in the Fluorine anion](https://pure.qub.ac.uk/en/datasets/electron-correlation-and-short-range-dynamics-in-attosecond-angul/)

  Armstrong, G. (Creator), [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Creator), Wragg, J. (Creator), Clarke, D. (Creator) & [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) (Creator), Queen's University Belfast, 10 Apr 2020

  DOI: [10.17034/dc24280a-ac0a-4815-908b-a03a9cea1df0](https://doi.org/10.17034/dc24280a-ac0a-4815-908b-a03a9cea1df0)

  Dataset

  File
- ### [Rotational asymmetry in photodetachment from F- in circularly polarised laser fields](https://pure.qub.ac.uk/en/datasets/rotational-asymmetry-in-photodetachment-from-f-in-circularly-pola/)

  Armstrong, G. (Creator), Clarke, D. (Creator), [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Creator) & [Van Der Hart, H.](https://pure.qub.ac.uk/en/persons/hugo-van-der-hart/) (Creator), Queen's University Belfast, 06 Feb 2019

  DOI: [10.17034/f087c320-7579-4942-a95f-f7cd66d6a0c2](https://doi.org/10.17034/f087c320-7579-4942-a95f-f7cd66d6a0c2)

  Dataset

  File

[View all 17 datasets](https://pure.qub.ac.uk/en/persons/andrew-brown/datasets/)

## Prizes

- ### [Best Student Poster](https://pure.qub.ac.uk/en/prizes/best-student-poster/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Recipient), 23 Jul 2011

  Prize: Prize (including medals and awards)
- ### [Best Student Speaker](https://pure.qub.ac.uk/en/prizes/best-student-speaker/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Recipient), 28 Jun 2012

  Prize: Prize (including medals and awards)

## Activities

- [11](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fattendance%2Fworkshopseminarcourseparticipation)
  Participation in workshop, seminar, course
- [9](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fattendance%2Fconferenceparticipation)
  Participation in conference
- [5](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Ftalk%2Finvited_talk)
  Invited talk
- [4](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fmembership%2Fboard)
  Membership of board
- 6
  More

  - [**2** Publication peer-review](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Feditorialwork%2Fpublicationpeerreview)
  - [**1** Participation in Festival/Exhibition](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fattendance%2Fparticipation_in_festival_exhibition)
  - [**1** Editorial activity](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Feditorialwork%2Feditorial)
  - [**1** PhD external examination](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fexamination%2Fexamination)
  - [**1** Membership of network](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Fmembership%2Fnetwork)
  - [**1** Invited or keynote talk at national or international conference](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/?type=%2Fdk%2Fatira%2Fpure%2Factivity%2Factivitytypes%2Ftalk%2Finvited_or_keynote_talk_at_national_or_international_conference)

- ### [Back to the Fortran Future II](https://pure.qub.ac.uk/en/activities/back-to-the-fortran-future-ii/)

  [Rainer, A.](https://pure.qub.ac.uk/en/persons/austen-rainer/) (Organiser) & [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Organiser)

  08 Sept 2025

  Activity: Participating in or organising an event types › Participation in workshop, seminar, course
- ### [Love of learning: Why should students bother with mathematics in today's context?](https://pure.qub.ac.uk/en/activities/love-of-learning-why-should-students-bother-with-mathematics-in-t/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Invited speaker)

  30 Aug 2025

  Activity: Talk or presentation types › Invited talk
- ### [Research Software Engineering](https://pure.qub.ac.uk/en/activities/research-software-engineering/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Invited speaker)

  10 Jan 2025

  Activity: Talk or presentation types › Invited talk
- ### [International Union for Pure and Applied Physics (External organisation)](https://pure.qub.ac.uk/en/activities/international-union-for-pure-and-applied-physics-external-organis-2/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Board Member)

  2025 → …

  Activity: Membership types › Membership of board
- ### [Institute of Physics (External organisation)](https://pure.qub.ac.uk/en/activities/institute-of-physics-external-organisation-13/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/) (Member)

  2025 → …

  Activity: Membership types › Membership of board

[View all 38 activities](https://pure.qub.ac.uk/en/persons/andrew-brown/activities/)

## Press/Media

- ### [How stranger things could inspire a new generation of physicsts](https://pure.qub.ac.uk/en/clippings/how-stranger-things-could-inspire-a-new-generation-of-physicsts/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/)

  11/01/2026

  1 Media contribution

  Press/Media: Expert Comment
- ### [Is an alternate dimension like the Upside Down possible?](https://pure.qub.ac.uk/en/clippings/is-an-alternate-dimension-like-the-upside-down-possible/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/)

  27/11/2025

  1 Media contribution

  Press/Media: Public Engagement Activities
- ### [Meet the physicist](https://pure.qub.ac.uk/en/clippings/meet-the-physicist/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/)

  07/06/2024

  1 Media contribution

  Press/Media: Public Engagement Activities
- ### [Why are there leap years?](https://pure.qub.ac.uk/en/clippings/why-are-there-leap-years/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/)

  08/02/2024

  1 Media contribution

  Press/Media: Public Engagement Activities
- ### [A method to resolve quantum interference between photoionization pathways with attosecond resolution](https://pure.qub.ac.uk/en/clippings/a-method-to-resolve-quantum-interference-between-photoionization-/)

  [Brown, A.](https://pure.qub.ac.uk/en/persons/andrew-brown/)

  04/12/2023

  1 Media contribution

  Press/Media: Other

[View all 10 press/media](https://pure.qub.ac.uk/en/persons/andrew-brown/clippings/)