A modulated neutron initiator is a neutron source capable of producing a burst of neutrons on activation. It is a crucial part of some nuclear weapons...

up initiator in Wiktionary, the free dictionary. An initiator can refer to: A person who instigates something. Modulated neutron initiator, a neutron source...

reliable. For example, sealed neutron tubes have replaced radioactive modulated neutron initiators, in supplying a pulse of neutrons to the imploding core of...

was 3.62 inches (92 mm) in diameter and contained an "Urchin" modulated neutron initiator that was 0.8 inches (20 mm) in diameter. The depleted uranium...

tamper was coated in a thin layer of boron. A polonium-beryllium modulated neutron initiator, known as an "urchin" because its shape resembled the inner shell...

were ultimately responsible for creating the polonium-based modulated neutron initiators that were used to begin the chain reactions in the atomic bombs...

tamper was coated in a thin layer of neutron-absorbing boron. A polonium-beryllium modulated neutron initiator, known as an "urchin", was developed to...

neutrons and α-particles created from a reaction in the neutron generator. The system records the temporal and spatial displacement of the neutrons and...

products needed to be conserved. Internal initiation, using a modulated neutron initiator, required Polonium-210 (210 Po), a highly radioactive element...

some of the implosion and firing features of Green Bamboo. The modulated neutron initiator was Blue Stone. Twelve Green Grass warheads were fitted in the...

a polonium-beryllium modulated neutron initiator, a development of the technique that Chadwick had used to discover the neutron over a decade before....

modulated neutron initiator to start the chain reaction. Christy worked with Klaus Fuchs, Paul Stein and Hans Bethe to develop a suitable initiator design...

Robert Oppenheimer, asked them to review the design of the modulated neutron initiator. They reported that it would work. That they had reached this...

(1910–1980)Pages displaying wikidata descriptions as a fallback Modulated neutron initiator – Neutron source used in some nuclear weapons Munroe effect – Explosive...

bomb's triggering mechanism, the Fuchs–Sherr polonium-beryllium modulated neutron initiator. On July 16, 1945, Sherr was present at the Trinity nuclear test...

to assemble. The short life of their lead-acid batteries and modulated neutron initiators, and the heat generated by the fissile cores, precluded storing...

of the uranium tamper, and in the design and adoption of the modulated neutron initiator. His presence boosted morale, and helped improve the administration...

gave Bohr credit for an important contribution to the work on modulated neutron initiators. "This device remained a stubborn puzzle," Oppenheimer noted...

member of the Manhattan Project, co-inventor of Fuchs-Sherr modulated neutron initiator. Sir Ian Sinclair, 87, British lawyer. Sabawi Ibrahim al-Tikriti...

radiation; and 4) the neutrons from the primary's nuclear detonation. The interstage is responsible for accurately modulating the transfer of energy...

maximum density, a burst of neutrons must be supplied to start the chain reaction. Early weapons used a modulated neutron generator codenamed "Urchin"...

assemblies being sets of bomb components without the fissile pit or modulated neutron initiators. Uniforms were issued to Project Alberta's civilian personnel...

was used by the Manhattan Project as a neutron reflector, and as a component of modulated neutron initiators. Only one firm produced it commercially...

or particle accelerators during a supernova during the spin-down of a neutron star when cosmic rays or accelerated particle beams strike atoms The majority...

received a doctorate from the University of Vienna in 1971, with a thesis on "Neutron depolarization measurements on a Dy-single crystal" under Helmut Rauch...

gamma radiation and a high efficiency neutron detector based on novel silicon technologies. The gamma and neutron detectors are integrated into a single...

molecular motors, etc. by modulating thermal neutrons into beams of slow neutrons. In combination with fissile materials, neutrons produced by ICF can potentially...

space charge. A vacuum tube has the advantage that conductivity may be modulated at any time whereas a thyratron becomes filled with plasma and continues...

uranium-235 (U-235) accounting for about 0.7%. U-238 has 146 neutrons and U-235 has 143 neutrons. Different isotopes have different behaviors. For instance...

(even if an unusually compact cluster of compact objects, white dwarfs, neutron stars or stellar-mass black holes cannot be completely discounted). A study...