This report presents my work for Double Chooz at MIT during the 2009 Summer REU program, funded by Columbia University. Double Chooz is a reactor neutrino experiment that aims to measure the mixing parameter θ13. The experiment detects electron antineutrinos via inverse beta decay. Neutrons and light nuclei made in muon spallation are a major background to the experiment. The delayed neutron em...

Radiation hazards have been known for more than 60 years. Only a few months after Rontgen’s discovery in I 895, enthusiasts were burning themselves and their patients by liberal applications of the new X-rays. Soon the dangers of X-rays and radium became all too obvious, or so it seems to us. At the time, few people were much alarmed and no effective measures of control were organized until abo...

there is no organometalic compound of indium known to exist naturally in the human body. however, a number of compounds prepared with ¹¹¹in have been evaluated for localization studies. the useful radioactive decay characteristics and the suitable chemical properties of the metal ion have drawn attention of many investigators resulting in the preparation of numerous ¹¹¹in labeled compounds for ...

mass separation ISOL-principle ial. Then these isotopes can be either diffused or implanted into the material under study. The most versatile procedure is ion implantation: Depending on the implantation energy, the concentration of dopants, their lateral and their depth distribution can be controlled easily. Any unwanted co-doping by other elements is only determined by the purity of the ion be...

Potassium-40 ($^{40}$K) is a long-lived, naturally occurring radioactive isotope. The decay products are prominent backgrounds for many rare event searches, including those involving NaI-based scintillators. $^{40}$K also plays role in geochronological dating techniques. branching ratio of the electron capture directly to ground state argon-40 has never been measured, which can cause difficulty...

This contribution describes DESPEC [1] (DEcay SPECtroscopy) which together with HISPEC [2] constitutes one of the proposed and accepted joint experiments of NuSTAR. Decay studies of implanted activities will be vital for our understanding of nuclear structure and astrophysics far from stability where FAIR will produce the most exotic beams of nuclei with short half-lives. Decay studies of isome...

The γ-ray de-excitations following the β-decay of Ga and the β-n decay of Ga have been studied. The radioactive species were produced using the PARRNe on-line mass-separator installed at the IPN Orsay Tandem accelerator. Two γ-lines were attributed to Ge with the aid of β-γ and γ-γ coincidences. The Z identification of the γ-lines was provided by time analysis of a buid-up/decay cycle. The exci...

A significant decay branch of 8B to the ground state of 8Be would extend the solar neutrino spectrum to higher energies than anticipated in the standard solar models. These high-energy neutrinos would affect current neutrino oscillation results and also would be a background to measurements of the hep process. We have measured the delayed α particles from the decay of 8B, with the goal of obser...