Phillips, H C; Parisot, M*; Dean, J C J; Perrie, L*; Sephton, J P (2015) Development and testing of a prototype modular tritium and carbon-14 gas environmental monitoring system. Fusion Sci. Technol., 67 (3). pp. 527-530.

Johansson, L C; Bakhshandeiar, E; Pearce, A; Collins, S M; Orlandini, P*; Sephton, J P (2014) A miniature TDCR system dedicated to in-situ activity assay. Appl. Radiat. Isot., 87. pp. 287-291.

Cassette, P*; Capogni, M*; Johansson, L C; Kossert, K*; Nahle, O*; Sephton, J P; DeFelice, P* (2013) Development of portable liquid scintillation counters for on-site primary measurement of radionuclides using the triple-to-double coincidence ratio method. In: 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA)., 23-27 June 2013, Merseille, France.

Sephton, J P; Williams, J M; Johansson, L C; Phillips, H C (2012) A low noise preamplifier with optoelectronic overload protection for radioactivity measurement. Appl. Radiat. Isot., 70 (9). pp. 2047-2050.

Phillips, H C; Sephton, J P; Johansson, L C; Dean, J C J (2012) A preliminary investigation into a simple method for the determination of the mean ionisation energy of gas mixtures used in the NPL primary gas counting system. Appl. Radiat. Isot., 70 (9). pp. 2043-2046.

Phillips, H C; Johansson, L C; Sephton, J P (2010) Standardisation of Kr-85. Appl. Radiat. Isot., 68 (7-8). pp. 1335-1339.

Marouli, M; Dean, J C J; Sephton, J P; Spyrou, N M* (2010) Standardisation of positron-emitters in gas with the NPL primary gas counting system. Appl. Radiat. Isot., 68 (7-8). pp. 1378-1382.

Johansson, L C; Sephton, J P (2010) Validation of a new TDCR system at NPL. Appl. Radiat. Isot., 68 (7-8). pp. 1537-1539.

Bailey, M; Sephton, J P; Sharpe, P H G (2009) Monte Carlo modelling and real time dosemeter measurements of dose rate distribution at a Co-60 industrial irradiation plant. Radiat. Phys. Chem., 78 (7-8). pp. 453-456.

Giblin, S P; Bakhshandeiar, E; Fletcher, N E*; Lines, K J; Sephton, J P (2009) An SI traceable electrometer system for radionuclide metrology. Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detec. Assoc. Equip., 606 (3). pp. 824-828.

Sharpe, P H G; Sephton, J P; Gouldstone, C A (2009) The behaviour of alanine dosimeters at temperatures between 100 and 300 K. Radiat. Phys. Chem., 78 (7-8). pp. 477-479.

Sharpe, P H G; Miller, A*; Sephton, J P; Gouldstone, C A; Bailey, M; Helt-Hansen, J* (2009) The effect of irradiation temperatures between ambient and 80 ºC on the response of alanine dosimeters. Radiat. Phys. Chem., 78 (7-8). pp. 473-475.

Sephton, J P; Johansson, L C; Williams, J M (2008) A low noise current sensitive amplifier-discriminator system for beta particle counting. Appl. Radiat. Isot., 66 (6-7). pp. 890-894.

Sephton, J P; Sharpe, P H G; Chu, R D H*; O'Hara, K P J*; Abdel-Rehim, F*; Abdel Fattah, A* (2007) Dose mapping of a Co60 industrial irradiation plant using an electronic data recording system, static measurements and mathematical modelling. Radiat. Phys. Chem., 76 (11-12). pp. 1820-1825.

McEwan, M R*; Sephton, J P; Sharpe, P H G; Shipley, D R (2003) Use of a range scaling method to determine alanine/water stopping power ratios. Radiat. Phys. Chem., 68 (6). pp. 1017-1022.

Sephton, J P; Sharpe, P H G; Chu, R D H* (2001) The use of ionisation chambers for dose rate measurements at industrial irradiation plants. In: IMRP 2001, March 2001.

Sharpe, P H G; Sephton, J P; Chu, R D (1999) Real time dosimetry measurements at an industrial irradiation plant. In: Proceedings IMRP Meeting, March 1999, Melbourne,.

Sharpe, P H G; Sephton, J P (1998) Alanine dosimetry at NPL - the development of a mailed reference dosimetry service at radiotherapy dose levels. In: IAEA-SM-356/R6 Proc. International symposium on techniques for high dose dosimetry in Industry, Agriculture and Medicine, 2-5 November 1998, Vienna.

Sharpe, P H G; Sephton, J P (1998) An automated system for the measurement of alanine/EPR dosimeters. In: Proceedings of the 5th International Symposium on ESR dosimetry and applications., June 1998, Moscow,.

Paton Walsh, C; Woods, M J; Sephton, J P; Woods, S A; Lucas, S E M; Rossiter, M J; Williams, T T; Bass, G A (1996) 131I diagnosis and therapy capsules and low dose rate 125I and 137Cs brachytherapy sources. Calibration of the NPL secondary standard radionuclide calibrator. Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detec. Assoc. Equip., 369 (2-3). pp. 703-708.

Woods, M J; Munster, A S; Sephton, J P; Lucas, S E M; Paton Walsh, C (1996) Calibration of the NPL secondary standard radionuclide calibrator for 32P, 89Sr and 90Y. Nucl. Instrum. Methods Phys. Res., A329 (2-3). pp. 698-702.

Sharpe, P H G S; Rajendran, K; Sephton, J P (1996) Progress towards an alanine/ESR therapy level reference dosimetry service at NPL. Appl. Radiat. Isot., 47 (11-12). pp. 1171-1175.

Hedley, R P*; Danyluk, P*; Chandler, M J*; Paton-Walsh, C; Woods, M J; Sephton, J P (1994) Problems, and measurement solutions developed, in the characterisation and use of ISO Class 1 photon-emitting reference sources for the calibration of surface contamination monitors. Nucl. Instrum. Methods Phys. Res., A339. p. 253.

Reher, D F G*; Aalbers, A H L*; Bjerke, H*; Drugge, N*; Genka, T*; Rossiter, M J; Santry, D*; Sephton, J P; Sibbens, G*; Seuntjens, J*; Thierens, H*; Verhaegan, F*; Williams, T T; Woods, M J (1994) Second EUROMAT comparison of air kerma rate and activity measurements of 192Ir brachytherapy wires. Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detec. Assoc. Equip., 339 (1-2). pp. 386-390.

Sephton, J P; Woods, M J; Rossiter, M J; Williams, T T; Dean, J C J; Bass, G A; Lucas, S E M (1993) Calibration of the NPL secondary standard radionuclide calibrator for 192Ir brachytherapy sources. Phys. Med. Biol., 38 (8). pp. 1157-1164.