D J Simpkin

The spatial and energy dependence of bremsstrahlung production about beta point sources in H2O.

D J Simpkin, T R Mackie, S J Cullom, 1992, Medical physics.

Primary shielding barriers for diagnostic x-ray facilities: a new model.

D J Simpkin, R L Dixon, D. Simpkin, 1998, Health physics.

Transmission data for shielding diagnostic x-ray facilities.

D J Simpkin, D. Simpkin, 1995, Health physics.

Shielding a spectrum of workloads in diagnostic radiology.

D J Simpkin, D. Simpkin, 1991, Health physics.

Shielding requirements for constant-potential diagnostic x-ray beams determined by a Monte Carlo calculation.

D J Simpkin, D. Simpkin, 1989, Health physics.

Scatter radiation intensities about mammography units.

D J Simpkin, D. Simpkin, 1996, Health physics.