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- Godiva_device abstract "The Lady Godiva device was an unshielded, pulsed nuclear reactor originally situated at the Los Alamos National Laboratory (LANL), New Mexico, U.S. It was one of a number of criticality devices within Technical Area 18 (TA-18). Specifically, it was used to produce bursts of neutrons and gamma rays for irradiating test samples, and inspired development of Godiva-like reactors. Physicist Otto Frisch remembered the Los Alamos team called an earlier unshielded uranium-235 assembly in 1944 "Lady Godiva".The radiation source within the Godiva device was a fissile metallic mass (usually highly enriched 235U), about 30 cm in diameter. This was located at the top of a two-metre-high metal tower. The burst of radiation was produced when a piston of fissile material was quickly inserted and extracted from a cavity within the larger fissile mass. During the time these two masses were combined, they formed a critical mass and a nuclear chain reaction was briefly sustained.Godiva's design was inspired from a self terminating property discovered when incorrectly experimenting with the Jemima device in 1952. Jemima operated by remotely lifting one stack of enriched uranium-235 disks up towards another, fixed, stack. On 18 April 1952, due to a miscalculation, Jemima was assembled with too many disks; this caused an excursion of 1.5 x 1016 fissions—an automatic scram—but no damage.On 3 February 1954 and 12 February 1957, accidental criticality excursions occurred causing damage to the device, but fortunately only insignificant exposures to personnel. This original Godiva device, known as Lady Godiva, was irreparable after the second accident and was replaced by the Godiva II.".
- Godiva_device thumbnail Godiva-before-scrammed.jpg?width=300.
- Godiva_device wikiPageExternalLink la_13638.shtml.
- Godiva_device wikiPageExternalLink la-13638.pdf.
- Godiva_device wikiPageID "9656278".
- Godiva_device wikiPageRevisionID "563857788".
- Godiva_device hasPhotoCollection Godiva_device.
- Godiva_device subject Category:Nuclear_accidents_and_incidents.
- Godiva_device subject Category:Nuclear_reactors.
- Godiva_device subject Category:Nuclear_research_reactors.
- Godiva_device type Apparatus102727825.
- Godiva_device type Artifact100021939.
- Godiva_device type Device103183080.
- Godiva_device type ElectricalDevice103269401.
- Godiva_device type Equipment103294048.
- Godiva_device type Instrumentality103575240.
- Godiva_device type NuclearReactor103834040.
- Godiva_device type NuclearReactors.
- Godiva_device type NuclearResearchReactors.
- Godiva_device type Object100002684.
- Godiva_device type PhysicalEntity100001930.
- Godiva_device type Reactor104057846.
- Godiva_device type Whole100003553.
- Godiva_device comment "The Lady Godiva device was an unshielded, pulsed nuclear reactor originally situated at the Los Alamos National Laboratory (LANL), New Mexico, U.S. It was one of a number of criticality devices within Technical Area 18 (TA-18). Specifically, it was used to produce bursts of neutrons and gamma rays for irradiating test samples, and inspired development of Godiva-like reactors.".
- Godiva_device label "Godiva device".
- Godiva_device label "Godiva-Reaktor".
- Godiva_device label "Леди Годива (реактор)".
- Godiva_device sameAs Godiva-Reaktor.
- Godiva_device sameAs m.02pnb5k.
- Godiva_device sameAs Q4257080.
- Godiva_device sameAs Q4257080.
- Godiva_device sameAs Godiva_device.
- Godiva_device wasDerivedFrom Godiva_device?oldid=563857788.
- Godiva_device depiction Godiva-before-scrammed.jpg.
- Godiva_device isPrimaryTopicOf Godiva_device.