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...

Corporation (now Google Analytics) "Urchin" was the code name for the modulated neutron initiator design used in the earliest American implosion atomic bombs The...

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...

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

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

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

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

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

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

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

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...

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

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

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

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

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

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

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

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

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

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

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...

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

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...

particular, the neutron possesses a non-zero magnetic moment despite being electrically neutral. This fact was an early indication that the neutron is not an...

brachytherapy, low energy X-rays, high-LET and proton therapy, boron capture neutron therapy and tissue inhomogeneities. A significant development in the field...

even in households to detect fungus and mold. The light from LEDs can be modulated very quickly so they are used extensively in optical fiber and free space...