Projects per year
Personal profile
Research interests
Detailed studies of the UV photochemistry and photophysics of gas phase molecules using a variety of state-of-the-art laser based techniques including H atom photofragment translational spectroscopy and velocity map ion imaging, and complementary electronic structure calculations. Current activities include extension of these methods to allow study of larger, less volatile (bio)molecules in the gas phase, the application of multimass imaging methods, and using ultrafast time-resolved pump-probe methods to explore the UV photochemistry and photophysics of such molecules in solution.
Growth and characterisation of diamond thin films grown by chemical vapour deposition (CVD). Current interest centres on exploring the gas phase and gas-surface chemistry that underpins CVD of diamond (and doped diamond) in microwave reactors using a range of laser and optical emission spectroscopy methods, plasma modelling, and QM/MM modelling of the gas-surface reactions.
Pulsed laser ablation and deposition as a route to forming nanostructured thin films, focussing particular on detailed investigations of the laser-target and laser-plume interactions through careful analysis of temporally, spatially and wavelength resolved images of optical emission from the ablation plume.
Professor Ashfold is a supervisor in the EPSRC Centre for Doctoral Training in Diamond Science and Technology.
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Projects
- 13 Finished
Chemical Applications of Velocity & Spatial Imaging
Orr-Ewing, A. J. & Ashfold, M. N. R.
8/01/14 → 31/12/19
Project: Research
Metrology concepts for a new generation of plasma manufacturing with atom-scale precision
1/07/13 → 21/12/18
Project: Research
NEW HORIZONS IN CHEMICAL AND PHOTOCHEMICAL DYNAMICS
Orr-Ewing, A. J. & Ashfold, M. N. R.
1/10/08 → 1/04/14
Project: Research
Research Output
Effects of ring-strain on the ultrafast photochemistry of cyclic ketones
Kao, M-H., Venkatraman, R. K., Ashfold, M. N. R. & Orr-Ewing, A. J., 13 Jan 2020, In : Chemical Science. 11, p. 1991-2000 10 p.Research output: Contribution to journal › Article (Academic Journal)
Open Access
File
Nitrogen in Diamond
Ashfold, M. N. R., Goss, J. P., Green, B. L., May, P. W., Newton, M. E. & Peaker, C. V., 24 Jun 2020, In : Chemical Reviews. 120, p. 5745-5794 50 p., 12.Research output: Contribution to journal › Review article (Academic Journal)
Optical Emission Imaging and Modelling Investigations of Microwave Activated SiH4/H2 and SiH4/CH4/H2 Plasmas
Mahoney, E. J. D., Ashfold, M. N. R., Mankelevich, Y. A. & Truscott, B. S., 25 Jun 2020, In : Journal of Physical Chemistry A. 124, p. 5109-5128Research output: Contribution to journal › Article (Academic Journal)
Datasets
Reactivity of Singlet Oxygen with Biomolecular Constituents
Karsili, T. (Creator), Marchetti, B. (Creator), Ashfold, M. (Creator) & Ashfold, M. N. R. (Data Manager), University of Bristol, 16 Aug 2016
DOI: 10.5523/bris.qsf82vq3qbm31kac5ggbn4ldx, http://data.bris.ac.uk/data/dataset/qsf82vq3qbm31kac5ggbn4ldx
Dataset
Ultrafast Chemical Dynamics: Photodissociation of N2O4 in solution
Grubb, M. (Creator), Orr-Ewing, A. J. (Creator), Coulter, P. (Creator) & Ashfold, M. N. R. (Creator), University of Bristol, 6 Feb 2017
DOI: 10.5523/bris.2vk036f35m5aq2dnlb79c0wcsh, http://data.bris.ac.uk/data/dataset/2vk036f35m5aq2dnlb79c0wcsh
Dataset
Ultrafast Chemical Dynamics: CN radical reactions in solution in acetonitrile.
McMullen, R. (Creator), Coulter, P. (Creator), Ashfold, M. N. R. (Creator), Grubb, M. (Creator), Roettger, K. (Creator), Ingle, R. (Creator), Dunning, G. (Creator), Roberts, G. (Creator), Koyama, D. (Creator), Murdock, D. (Creator), Marroux, H. (Creator), Sage, A. (Creator), Orr-Ewing, A. J. (Creator), Harris, S. (Creator) & Warren, J. (Creator), University of Bristol, 2 Nov 2015
DOI: 10.5523/bris.1bvvhkmn0dhd61ol5zmtgyv2dk, http://data.bris.ac.uk/data/dataset/1bvvhkmn0dhd61ol5zmtgyv2dk
Dataset
Activities
Kyoto University
Michael N R Ashfold (Visitor)
17 Aug 2014 → 19 Aug 2014
Activity: Visiting an external institution types › Visiting an external academic institution
European Material Research Society Spring Meeting
Michael N R Ashfold (Speaker)
30 May 2013
Activity: Participating in or organising an event types › Invited talk
University of Southern California
Michael N R Ashfold (Visiting researcher)
2013
Activity: Visiting an external institution types › Visiting an external academic institution
Supervised Work
Alternative Excitation Mechanisms Occurring within Microwave-activated Plasmas under Conditions Relevant to the Chemical Vapour Deposition of Diamond
Author: Mahoney, E. J. D., 1 Oct 2019Supervisor: Ashfold, M. (Supervisor) & Western, C. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy (PhD)
File
Exploring novel excited state dynamics using multi-mass ion imaging and universal ionisation
Author: Bain, M., 6 Dec 2019Supervisor: Ashfold, M. N. R. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy (PhD)
File
Fundamental studies of pulsed laser ablation.
Author: Claeyssens, F., 2001Supervisor: Ashfold, M. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy (PhD)
File