Publications

Papers

Selected Papers

2014

Williams, HR; Ambrosi, RM; Chen K et al., 2014, ‘Spark Plasma Sintered bismuth telluride-based thermoelectric materials incorporating dispersed boron carbide’, Journal of Alloys and Compounds, In Press,(http://dx.doi.org/10.1016/j.jallcom.2014.12.010)

Arridge CS, Achilleos N, Agarwald J, Agnore CB, Ambrosi R, et al., 2014, 'The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets', Planetary and Space Science, vol. 104, Part A, pp. 122–140 (http://dx.doi.org/10.1016/j.pss.2014.08.009)

Masters A, Achilleos N, Agnor CB, Campagnola S, Charnoz S, Christophe B, Coates AJ, Fletcher LN, Jones GH, Lamy L, Marzari F, Nettelmann N, Ruiz J, Ambrosi R, et al., 2014, 'Neptune and Triton: Essential pieces of the Solar System puzzle', Planetary and Space Science, vol. 104, Part A, pp. 108-121 (doi:10.1016/j.pss.2014.05.008).

2013

Williams, HR; Ning, H.; Reece, MJ; Ambrosi, RM; et al., 2013, ‘Metal matrix composite fuel for space radioisotope energy sources’, Journal of Nuclear Materials, vol. 433, issues 1-3, pp. 116-123. (doi:10.1016/j.jnucmat.2012.09.030)

2012

Williams HR, Ambrosi RM, Bannister NP, Samara-Ratna P, Sykes J. 2012. 'A conceptual spacecraft Radioisotope Thermoelectric and Heating Unit (RTHU)'. International Journal of Energy Research, vol.36, pp. 1192-1200. (doi:10.1002/er.1864)

Smith, Alan; Crawford, IA; Gowen, Robert Anthony; Ambrosi, R; Anand, M; Banerdt, B; Bannister, N; Bowles, N; Braithwaite, C; Brown, P; 2012,  'Lunar Net a proposal in response to an ESA M3 call in 2010 for a medium sized mission', Experimental Astronomy, vol. 33, issue 2, pp 587-644.

2011

Williams, HR; Bridges, JC; Ambrosi, RM; et al., 2011, ‘Mars reconnaissance lander: Vehicle and mission design, Planetary and Space Science’, vol. 59, issue 13, pp. 1621-1631. (doi:10.1016/j.pss.2011.07.011)

Howe, SD; O'Brien, RC; Ambrosi R; et al., 2011, 'The Mars Hopper: an impulse driven, long range, long-lived mobile platform utilizing in-situ Martian resources', Acta Astronautica, vol. 69, issues 11–12, pp. 1050-1056. (http://dx.doi.org/10.1016/j.actaastro.2011.07.005).

Williams, HR; Ambrosi, RM; Bannister, NP; 2011, ‘A Mars hopping vehicle propelled by a radioisotope thermal rocket: thermofluid design and materials selection’, Proceedings of the Royal Society A, vol. 467, issue 2129, pp. 1290-1309. (doi:10.1098/rspa.2010.0438)

Gowen RA; Smith A; Fortes AD; Barber S; Brown P; Church P; Collinson G; Coates AJ; Collins G; Crawford IA; Dehant V; Chela-Flores J; Griffiths AD; Grindrod PM; Gurvits LI;  Hagermann A; Hussmann H; Jaumann R; Jones AP; Joy KH; Karatekin O; Miljkovic K; Palomba E; Pike WT; Prieto-Ballesteros O; Raulin F; Sephton MA; Sheridan S; Sims M; Storrie-Lombardi MC; Ambrosi R; et al.; 2011, 'Penetrators for in-situ subsurface investigations of Europa', Advances in Space Research, vol. 48, issue 4, pp. 725-742, DOI: 10.1016/j.asr.2010.06.026.

Williams HR; Ambrosi RM; Bannister NP; et al.; 2011, 'A conceptual spacecraft radioisotope thermoelectric and heating unit (RTHU)', International Journal of Energy Research, vol. 36, issue 12, pp. 1192-1200, DOI: 10.1002/er.1864.

Williams HR; Ambrosi RM; Bannister NP; et al.; 2011,  'Advanced materials and optimisation of a radioisotope thermal rocket motor for a mars hopper', Proceedings of Nuclear and Emerging Technologies for Space, Albuquerque NM, USA, vol.3282, pp. 7-10, ISBN: 978-089448-088-1.

2010

Skidmore, MS; Ambrosi, RM; 2010, ‘Verification of a Monte-Carlo planetary surface radiation environment model using gamma-ray data from Lunar Prospector and 2001 Mars Odyssey’, Nuclear Instruments and Methods A, vol. 612, issue 2, pp. 296-302. (http://dx.doi.org/10.1016/j.nima.2009.09.129)

2009

Skidmore, MS; Ambrosi, RM; 2009 'Gamma-ray spectroscopy in Mars orbit during solar proton events', Advances in Space Research, vol. 44, issue 9, pp. 1019-1029. (http://dx.doi.org/10.1016/j.asr.2009.06.004).
Skidmore, MS; Ambrosi, RM; et al.; 2009, 'Prompt gamma-ray activation analysis of Martian analogues at the FRM II neutron reactor and the verification of a Monte Carlo planetary radiation environment model', Nuclear Instruments and Methods A, vol. 607, issue 2, pp. 421-431. (http://dx.doi.org/10.1016/j.nima.2009.05.161).
O’Brien, RC; Ambrosi, RM; et al.; 2009, 'Spark plasma sintering of simulated radioisotope materials within tungsten cermets', Journal of Nuclear Materials, vol. 393, issue 1, pp. 108-113. (http://dx.doi.org/10.1016/j.jnucmat.2009.05.012).
Skidmore, MS; Ambrosi, RM; et al.; 2009, 'Hybrid X-ray and gamma-ray spectrometer for in-situ planetary science missions', Nuclear Instruments and Methods A, vol. 604, issue 3, pp. 592-603. (http://dx.doi.org/10.1016/j.nima.2009.03.215).
Skidmore, MS; Ambrosi, RM; et al.; 2009, 'Neutron sources for in-situ planetary science applications', Nuclear Instruments and Methods A, vol. 608, issue 3, pp. 403-409. (http://dx.doi.org/10.1016/j.nima.2009.07.011)
O'Brien RC; Ambrosi RM; et al.; 2009, 'Production of safe radioisotope heat sources by spark plasma sintering', Proceedings of Nuclear and Emerging Technologies for Space, Atlanta GA, USA, ISBN: 978-0-89448-072-0.
O'Brien RC; Ambrosi RM; et al.; 2009, 'Fabrication of prismatic fuel elements for space power and nuclear thermal propulsion reactors by spark plasma sintering', Proceedings of Nuclear and Emerging Technologies for Space, Atlanta GA, USA, ISBN: 978-0-89448-072-0.

2008

O’Brien, RC; Ambrosi, RM; et al.; 2008, 'Safe radioisotope thermoelectric generators and heat sources for space applications', Journal of Nuclear Materials, vol. 377, issue 3, pp. 506-521. (http://dx.doi.org/10.1016/j.jnucmat.2008.04.009)
Auricchio, N.; Abbene, L.; Caroli, E.; Schiavone, F.; Del Sordo, S.; Ambrosi, R.; et al.; 2008, 'Measurements with a hybrid detector prototype composed of a MOS CCD and a CZT spectrometer', IEEE Nuclear Science Symposium Proceedings, doi: 10.1109/NSSMIC.2008.4775177.
Brown C; Ambrosi RM; et al.; 2008, 'Improving quantum efficiency and spectral resolution of a CCD through direct manipulation of the depletion region', Proceedings of SPIE, vol. 7011, doi:10.1117/12.802622.
Carpenter JD; Wells A; Abbey AF; Ambrosi RM; 2008, 'Meteoroid and space debris impacts in grazing-incidence telescopes', Astronomy and Astrophysics, vol. 483, issue 3, pp. 941-947, DOI: 10.1051/0004-6361:200809414.

2007

Ambrosi, RM; Street, R.; et al.; 2007, 'X-ray tests of a microchannel plate detector and amorphous silicon pixel array readout for neutron radiography', Nuclear Instruments and Methods A, vol. 572, issue 2, pp. 844-852. (http://dx.doi.org/10.1016/j.nima.2006.11.055).
Ambrosi RM; Fraser GW; 2007, 'Method and device for detecting fast neutrons', US Patent 7265359.

2006

Ambrosi, RM; Bannister NP; Watterson, JIW; 2006,' A large area A large area fast neutron detector based on an amorphous silicon pixel array and reflective telescope optics', Nuclear Instruments and Methods A, vol. 566, issue 2, pp. 622-632. (http://dx.doi.org/10.1016/j.nima.2006.06.071).

Carpenter JD; Abbey AF; Ambrosi RM; et al.; 2006, 'Effects of micrometeoroid and space debris impacts in grazing incidence telescopes', Proceedings of SPIE, vol. 6266, doi: 10.1117/12.677410.

2005

Ambrosi, RM; Fraser, GW; et al.; 2005, ‘Design of a prototype microchannel plate detector with cooled amorphous silicon array readout for neutron radiography’, Nuclear Instruments and Methods A, vol. 542, issue 1, pp. 271-278. (http://dx.doi.org/10.1016/j.nima.2005.01.147).
Ambrosi, RM; et al.; 2005, ‘Neutron activation analysis, gamma ray spectrometry and radiation environment monitoring instrument concept: GEORAD’, Nuclear Instruments and Methods A, vol. 539, issue 1, pp. 198-216. (http://dx.doi.org/10.1016/j.nima.2004.10.031).
Ambrosi RM; Holland AD; Hutchinson IBH; Denby M; 2005, The effect of the prompt particle environment at L2 on optical CCDs for astronomy and astrophysics, Planetary and Space Science, vol. 53, issues 14–15, pp.1449-1465 (http://dx.doi.org/10.1016/j.pss.2005.10.004).
Briggs M; Ambrosi RM; Nelms N; Fraser GW; 2005, 'Proposed method to improve the accuracy of thermal conductivity measurements of a planetary regolith', Nuclear Instruments and Methods in Physics Research A, vol. 541, issue 3, pp. 651-656, DOI: 10.1016/j.nima.2004.12.008.
Holland AD; Castelli C; Hutchinson I; Smith DR; Calafell J; Pool P; Burt DJ; Ambrosi R; French M; 2005, 'MOS CCDs for the wide field imager on the XEUS spacecraft, Proceedings of SPIE, vol. 5898, doi: 10.1117/12.639708.

2004

Ambrosi, RM; Watterson, JIW; 2004, ‘The effect of the imaging geometry and the impact of neutron scatter on the detection of small features in accelerator-based fast neutron radiography’, Nuclear Instruments and Methods A, vol. 524, issue 1, pp. 340-354. (http://dx.doi.org/10.1016/j.nima.2003.12.042).
Moretti A; Campana S; Tagliaferri G; Abbey AF; Ambrosi RM; et al.; 2004, 'SWIFT XRT point spread function measured at the Panter end-to-end tests' Proc. SPIE 5165 ; doi: 10.1117/12.504857.
Hill, JE; Burrows, DN; Nousek, JA; Abbey, AF; Ambrosi, RM; Brauninger, HW; Burkert, W; Campana, S; Cheruvu, C; Wells, AA; 2004, 'Readout modes and automated operation of the Swift X-ray Telescope', Proceedings of SPIE, vol. 5165, pp. 217-231. (doi: 10.1117/12.505728)
Ambrosi RM; Holland AD; Mukerjee K; et al.; 2004, 'Next-generation detectors for x-ray astronomy', Proceedings of SPIE, vol. 5501, doi: 10.1117/12.555512.
Sembay S; Abbey A; Altieri B; Ambrosi R; et al.; 2004, 'In-orbit performance of the EPIC-MOS detectors on XMM-Newton', Proceedings of SPIE, vol. 5488, doi: 10.1117/12.553180.
Holland AD; Perryman MA; Vetel C; Steward R; Hutchinson IB; Ambrosi RM; et al.; 2004, 'Development of the CCDs for ESA GAIA cornerstone mission', Proceedings of SPIE, vol. 5167, doi: 10.1117/12.515401.
Smith DR; Ambrosi RM; et al.; 2004, 'The prompt particle background and micrometeoroid environment at L2 and its implications for Eddington', Proceedings of the 2nd Eddington Workshop, ESA SP-538, ESA Publications Division, ISBN 92-9092-848-4, 2004, pp. 417 - 420, 2004ESASP.538..417S.

2003

Watterson, JIW.; Ambrosi, RM; 2003, ‘Some fundamental considerations in resonance imaging using fast neutrons, Nuclear Instruments and Methods A’, vol. 513, issue 1, pp. 367-373. (http://dx.doi.org/10.1016/j.nima.2003.08.064).
Burrows DN; Hill JE; Nousek JA; Wells AA; Short, AT; Ambrosi RM; et al.; 2003, 'Swift x-ray telescope (XRT)' Proc. SPIE 4851; doi: 10.1117/12.461279.
Ambrosi, RM; Smith, DR; et al.; 2003, ‘The impact of low energy proton damage on the operational characteristics of EPIC-MOS CCDs’, Nuclear Instruments and Methods B, vol. 207, issue 2, pp. 175-185.
(http://dx.doi.org/10.1016/S0168-583X(03)00832-2)
Ambrosi, RM; Fraser, GW; et al.; 2003, ‘Large area microchannel plate detector with amorphous silicon pixel array readout for fast neutron radiography’, Nuclear Instruments and Methods A, vol. 500, issue 1, pp. 351-361. (http://dx.doi.org/10.1016/S0168-9002(03)00297-3)
Hill JE; Cheruvu C.; Abbey AF; Ambrosi RM; et al.; 2003, 'Algorithm for locating PSF-like events and computing the centroid in x-ray images', Proc. SPIE 4851, doi: 10.1117/12.461495.

Smith DR; Holland AD; Robbins MS; Ambrosi RM; Hutchinson I; 2003, 'Proton-induced leakage current in CCDs', Proc. SPIE 4851; doi: 10.1117/12.461331.
Holland AD; Cropper MS; Katz D; Hutchinson IB; Ambrosi RM; et al.; 2003, 'CCDs for the rotational velocity spectrometer on GAIA', Proceedings of SPIE, vol. 5251, doi: 10.1117/12.517151.
Mukerjee K; Osborne JP; Wells AA; Abbey AF; Beardmore AP; Short ADT; Ambrosi RM; et al.; 2003, 'The spectroscopic performance of the Swift X-ray Telescope for gamma-ray burst afterglow studies', Proceedings of SPIE, vol. 5165, doi: 10.1117/12.507852.
Holland AD; Ambrosi RM; Hutchinson I; et al.; 2003, 'MOS CCDs for the extended wide-field imager of XEUS', Proceedings of SPIE, vol. 4851, doi: 10.1117/12.461731.

2002

Ambrosi RM; Hutchinson, IBH; Hill, J; et al., 2002, 'The impact of the in-orbit background and the X-ray source intensity on the centroiding accuracy of the Swift X-ray telescope', Nuclear Instruments and Methods A, vol. 493, issues 1–2, pp. 67-78. (http://dx.doi.org/10.1016/S0168-9002(02)01284-6)

Ambrosi RM; Abbey AF; Hutchinson IBH; et al., 2002, 'Point spread function and centroiding accuracy measurements with the JET-X mirror and MOS CCD detector of the Swift gamma ray burst explorer's X-ray telescope', Nuclear Instruments and Methods in Physics Research A, vol. 488, issue 3, pp. 543-554. (http://dx.doi.org/10.1016/S0168-9002(02)00569-7)

Short AD; Ambrosi RM; Turner MJL; 2002, 'Spectral re-distribution and surface loss effects in Swift XRT (XMM-Newton EPIC) MOS CCDs' Nuclear Instruments and Methods A, vol. 484, issues 1–3, pp. 211-224.(http://dx.doi.org/10.1016/S0168-9002(01)02053-8)

Ambrosi, RM; Short, ADT; et al; 2002, ‘The effect of proton damage on the X-ray spectral response of MOS CCDs for the Swift X-ray telescope’, Nuclear Instruments and Methods A, vol. 482, issue 3, pp. 644-652. (http://dx.doi.org/10.1016/S0168-9002(01)01734-X).

Ambrosi RM; Abbey AF; Hutchinson I; et al., 2002, 'Centroiding and point response function measurements of the mirror/detector combination for the x-ray telescope on the SWIFT gamma-ray burst explorer', Proceedings of SPIE, vol. 4497, doi: 10.1117/12.4542228.

Rahmanian H; Ambrosi RM; Watterson JIW; 2002, 'Optimisation of resolution in accelerator-based fast neutron radiography', Nuclear Instruments and Methods in Physics Research A, vol. 477, issues 1-3, pp. 378-382, doi: 10.1016/S0168-9002(01)01834-4.

2001

Watterson JIW; Ambrosi RM; Rahmanian H; 2001, 'The detector problem in fast neutron radiography', AIP Proceedings, vol. 576, p. 1087.  http://dx.doi.org/10.1063/1.1395494.

2000

Ambrosi RM; Watterson JIW; Rahmanian H; 2000, 'Physics of image formation in accelerator-based fast neutron radiography', Proceedings of SPIE, vol. 4142, doi: 10.1117/12.410579.

1999

Ambrosi RM; Watterson JIW; Nam T; Keddy R; 1999, 'Effect of air cavities on the dose delivered to the lung during high-dose brachytherapy', Biological Trace Element Research, vol. 71-72, issue 1, pp. 499-507 doi: 10.1007/BF02784238.

1998

Ambrosi, RM; Watterson, JIW; et al.; 1998, ‘A Monte Carlo study of the effect of neutron scattering in a fast neutron radiography facility’, Nuclear Instruments and Methods B, vol. 139, issue 1, pp. 286-292.
(http://dx.doi.org/10.1016/S0168-583X(98)00039-1)
Ambrosi, RM; Watterson, JIW; 1998, ‘Factors affecting image formation in accelerator-based fast neutron radiography’, Nuclear Instruments and Methods B, vol. 139, issue 1, pp. 279-285. (http://dx.doi.org/10.1016/S0168-583X(98)00039-1).

1997

Ambrosi RM; Watterson JIW; Over GW; Guzek J; Tapper UAS; 1997, 'A Monte Carlo study of image formation in accelerator fast neutron radiography', AIP Proceedings, vol. 392, p. 879.  http://dx.doi.org/10.1063/1.52573.

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