Artificial Radioactivity Produced by Neutrons

The Discovery of Artificial Radioactivity

Frédéric Joliot was born in Paris on 19th March 1900. His older brother was killed in the first few days of the 1914-1918 war. Frédéric joined the École de physique et chimie industrielles in Paris, where he studied physics at the top of his class. In December 1924, director of studies, Paul Langevin, presented him to Marie Curie; he became her personal assistant at the Radium Institute, which ...

Radioactivity in some sachet drinking water samples produced in Nigeria

Background: Activity concentrations of 40K, 226Ra and 228Ra were measured in some sachet drinking water samples produced in Nigeria. Materials and Methods: The measurement was done by using high-purity germanium (HPGe) detector (Canberra Industries Inc.). The measured activity concentrations for 226Ra (U-series) and 228Ra (Thseries) were used with their ingested dose conversion factors ...

What’s NORMal for Fracking? Estimating Total Radioactivity of Produced Fluids

Naturally occurring radioactive materials (NORM) found in liquid wastes from hydraulic fracturing are an emerging environmental health concern. The heavily drilled Marcellus Shale, for example, contains isotopes of radium, polonium, and lead. However, the few studies that have focused on NORM in fracking wastewater (produced fluids) have reported on a single element—radium. In this issue of EHP...

Energy Spectrum of Fast Neutrons Produced by 130 MeV Protons in Water

In proton radiation therapy nuclear reactions of highenergy protons hitting beam line components (e.g. collimators or other beam shaping devices) lead to the production of secondary neutrons which may result in significant neutron dose equivalent values (typically of the order of mSv per treatment Gy), depending on the treatment techniques [1]. For scanning devices the neutron dose contribution...

Experiment No. 8. Artificial Radioactivity (a sample laboratory report)