The bacteriophage T4 containing assimilated radioactive phosphorus is inactivated at a rate proportional to the specific radioactivity of the constituent phosphorus. The beta radiation from the phosphorus makes a negligible contribution to this effect. The inactivation is therefore a direct consequence of the nuclear reaction, which kills the phage with an efficiency of about 1/12. Several phag...

A brief introduction to nuclear data in medicine is given. The choice of a radioisotope for medical application demands an accurate knowledge of radioactive decay data. Short-lived single photon and β+-emitters are preferred for diagnostic investigations, and longer-lived corpuscular radiation emitting radioisotopes for endoradiotherapy. The nuclear reaction cross section data, on the other han...

Acute Intake of Radionuclides Immediately After the Incident as theMain Contributor of the Internal Radiation Exposure After FukushimaDaiichi Nuclear Disaster The Fukushima Daiichi nuclear disaster is a series of equipment failures, nuclear meltdowns, and release of radioactive materials, raising serious health concerns in nearby residents. We recently reported that levels of internal radiation...

This paper addresses the noticeable increase of 137Cs activity concentrations in soil and fallout in the area surrounding Zagreb (Croatia) that occurred at the time of the 2011 Fukushima accident. This topic is important for public health as 137Cs is highly toxic due to its long half-life of radioactive decay and chemical similarity to potassium. 137Cs concentrations in fallout were much greate...

The present work contains some results of observations of neutron flux variations near the Earth’s surface. The Earth’s crust is determined to be a significant source of thermal and slow neutrons, originated from the interaction between the nuclei of the elements of the Earth’s crust and the atmosphere and α−particles, produced by decay of radioactive gases (Radon, Thoron and Actinon). In turn,...

IN THE years 1903 and 1904, shortly after the discovery of radium, small amounts of radioactivity were discovered in the water of the health springs of the spas of Germany and France. It was found that this radioactivity was due to radon, a gaseous daughter-product of radium. The supposed medicinal benefit from drinking of, or bathing in natural springwater was ascribed to the radon. A medical ...

The Superallowed Transition BEta NEutrino Decay Ion Coincidence Trap (St. Benedict) aims to measure the beta-neutrino angular correlation parameter for superallowed mixed beta decay transitions between mirror nuclei in order conduct precision tests of Standard Model. St. Benedict will include a gas catcher, differentially pumped extraction system, radio-frequency quadrupole (RFQ) cooler and bun...

A standard method to detect thermal neutrons is the nuclear interaction $^3$He(n,p)$^3$H. The spin-dependence of this also basis a neutron spin-polarization filter using polarized $^3$He. We consider corresponding for placed in an intrinsic orbital angular momentum (OAM) state. derive relative polarization-dependent absorption cross-sections $L=1$ OAM those results compound states $J^\pi=0^-$, ...

We report on the conception and first tests of General Purpose Ion Buncher (GPIB), radio-frequency beam-cooler buncher that will supply DESIR (Decay, Excitation Storage Radioactive Ions) experimental hall to be constructed complement SPIRAL1 SPIRAL2 facilities in GANIL. Its goals are both reduce emittance if necessary bunch radioactive ion beam from GANIL production adapt it needs different set...