نتایج جستجو برای: radioactive decay period

تعداد نتایج: 580142  

2005
Cristina Volpe

We describe the importance of having low-energy (10-100 MeV) neutrino beams produced through the decay of boosted radioactive ions (“beta-beams”). We focus on the interest for neutrino-nucleus interaction studies and their impact for astrophysics, nuclear and particle physics. In particular, we discuss the relation to neutrinoless double-beta decay. Finally, we mention the status as far as the ...

1997

Coal is largely composed of organic matter, but it is the inorganic matter in coal—minerals and trace elements—that have been cited as possible causes of health, environmental, and technological problems associated with the use of coal. Some trace elements in coal are naturally radioactive. These radioactive elements include uranium (U), thorium (Th), and their numerous decay products, includin...

2011

General Information Tritium is the only radioactive* isotope of hydrogen and it is commonly represented by the chemical symbol H-3 or 3H. While the most common form of the hydrogen atom has a nucleus consisting of a single proton, tritium’s nucleus is comprised of three particles: two neutrons and a single proton. This configuration makes tritium’s nucleus unstable and tending to undergo a proc...

2007
Patrick S. Brantley

We describe an asymptotic analysis of the coupled nonlinear system of equations describing time-dependent three-dimensional monoenergetic neutron transport and isotopic depletion and radioactive decay. The classic asymptotic diffusion scaling of Larsen and Keller [1], along with a consistent small scaling of the terms describing the radioactive decay of isotopes, is applied to this coupled nonl...

2003
V. I. VYSOTSKII V. N. SHEVEL A. B. TASHIREV A. A. KORNILOVA

The problem of utilization of high-activity waste by effect of nuclear transmutation in growing associations of microbiological cultures was studied. For the first time we have observed utilization of several kinds of highly active isotopes in the volume of distilled water extracted from the first contour of water-water atomic reactor convert to non-radioactive nuclei. 1. The model and the foun...

Journal: :Bitlis Eren üniversitesi fen bilimleri dergisi 2022

Radon gas, which undergoes radioactive decay, can cause damage to the lung tissue and cancer over time in indoor environments where it is inhaled. gas radioactivity concentrations were measured using CR-39 passive solid state nuclear track detectors (SSNTD) basement ground floor simultaneously summer winter periods 17 dwellings Çanakkale (Turkey). Accordingly, an average of 163.67 Bq.m-3 baseme...

2011
J. B. Murphy

The Earth’s surface processes are predominantly controlled by the interaction between the Earth’s internal heat and solar radiation. Surface heat-flow measurements reflect the increase in temperature with depth, which results in flow of the Earth’s internal heat from the core, through the mantle, to the surface. Heat-flow is highest in volcanically active regions and is lowest near oceanic tren...

2014
Cyrille Dejemeppe Yves Deville

Nuclear Medicine (NM) is a medical imaging technique in which patients are administered radioactive tracers. As the tracers decay in the human body, they emit photons, which are then captured to generate an image used for diagnostic purposes. The schedule of daily patients in an NM center is a hard and interesting problem due to the continuous decay of these radioactive tracers. This scheduling...

2005
V. I. VYSOTSKII Kiev Shevchenko

The presented paper discusses the theory and results of direct experimental investigation of the control of internal electron conversion channel of radioactive isotopes spontaneous decay by controlling action of oriented crystal matrix on motion of conversion electrons. The same effect takes place at any β-processes (including at decay of a neutron with an emission of electrons and neutrino). I...

B. Joob, V. Wiwanitkit,

Sir, the big flooding in Thailand in 2011 is one of the problematic flooding in Asia. It causes several destroying to many things in the disaster areas. An important concern is on the effect on the setting with the radioactive elements usage. In Thailand, there are some places with radioactive elements including to the university, hospital as well as radioactive research center. Luckily, ...

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