us has 4,000 nuclear missles.
us has 4,000 nuclear missles.
how many nuclear missles does the us have?
4,000
the world's nuclear fleet creates about of high-level spent nuclear fuel each year. high-level radioactive waste management concerns management and disposal of highly radioactive materials created during production of nuclear power. the technical issues in accomplishing this are daunting, due to the extremely long periods radioactive wastes remain deadly to living organisms. of particular concern are two long-lived fission products, technetium-99 (half-life 220,000 years) and iodine-129 (half-life 15.7 million years), which dominate spent nuclear fuel radioactivity after a few thousand years. the most troublesome transuranic elements in spent fuel are neptunium-237 (half-life two million years) and plutonium-239 (half-life 24,000 years). consequently, high-level radioactive waste requires sophisticated treatment and management to successfully isolate it from the biosphere. this usually necessitates treatment, followed by a long-term management strategy involving permanent storage, disposal or transformation of the waste into a non-toxic form. however, many nuclear power by-products are usable as nuclear fuel themselves; extracting the usable energy producing contents from nuclear waste is called "nuclear recycling".
nuclear power debate
talmi's main field of research is the theory of nuclear structure. the atomic nucleus is composed of a large number of protons and neutrons which move due to strong interactions between them. in spite of their complexity, nuclei exhibit some simple and regular features. most importantly, nuclei behave as if they move independently in a common static potential well. this gives rise to the existence of shells of protons and neutrons much like the electronic shells in atoms. nuclei whose proton and neutron shells are complete have special stability and the numbers of protons and of neutrons in them are called magic numbers. this picture of the nucleus is called the nuclear shell model to obtain the information from experimental data and use it to calculate and predict energies which have not been measured. this method has been successfully used by many nuclear physicists and has led to deeper understanding of nuclear structure. to calculate energies of nuclear states it is necessary to know the exact form of the forces which act between the nuclear constituents. these are still not sufficiently known even after many years of research. talmi developed a method to obtain the information from experimental data and use it to calculate and predict energies which have not been measured. this method has been successfully used by many nuclear physicists and has led to deeper understanding of nuclear structure.
igal talmi