My WEIGH Triton T3R Rechargeable 500g x 0.01g Precision Pocket Scales

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My WEIGH Triton T3R Rechargeable 500g x 0.01g Precision Pocket Scales

My WEIGH Triton T3R Rechargeable 500g x 0.01g Precision Pocket Scales

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Simulated 2D and 3D analysis for light water reactor spent fuel assemblies (isotopic activation, depletion, and decay for light water reactor fuel assemblies) and 2D general purpose lattice physics depletion calculations and generation of few-group cross section data for use in nodal core simulators Recent nuclear decay data, neutron reaction cross sections, energy-dependent neutron-induced fission product yields, delayed gamma ray emission data, neutron emission data, and photon yield data

The orbital properties of Triton were already determined with high accuracy in the 19th century. It was found to have a retrograde orbit, at a very high angle of inclination to the plane of Neptune's orbit. The first detailed observations of Triton were not made until 1930. Little was known about the satellite until Voyager 2 flew by in 1989. [7] Main article: Atmosphere of Triton Artist's impression of Triton, showing its tenuous atmosphere just over the limb. The proposed capture of Triton may explain several features of the Neptunian system, including the extremely eccentric orbit of Neptune's moon Nereid and the scarcity of moons as compared to the other giant planets. Triton's initially eccentric orbit would have intersected the orbits of irregular moons and disrupted those of smaller regular moons, dispersing them through gravitational interactions. [4] [5]The first attempt to measure the diameter of Triton was made by Gerard Kuiper in 1954. He obtained a value of 3,800km. Subsequent measurement attempts arrived at values ranging from 2,500 to 6,000km, or from slightly smaller than the Moon (3,474.2km) to nearly half the diameter of Earth. [73] Data from the approach of Voyager 2 to Neptune on August 25, 1989, led to a more accurate estimate of Triton's diameter (2,706km). [74] Fixed source Monte Carlo code applied in the MAVRIC sequence for multigroup and continuous energy analysis Triton's western hemisphere consists of a strange series of fissures and depressions known as "cantaloupe terrain" because it resembles the skin of a cantaloupe melon. Although it has few craters, it is thought that this is the oldest terrain on Triton. [68] It probably covers much of Triton's western half. [7] Before the flyby of Voyager 2, astronomers suspected that Triton might have liquid nitrogen seas and a nitrogen/methane atmosphere with a density as much as 30% that of Earth. Like the famous overestimates of the atmospheric density of Mars, this proved incorrect. As with Mars, a denser atmosphere is postulated for its early history. [72] Triton is the seventh-largest moon and sixteenth-largest object in the Solar System and is modestly larger than the dwarf planets Pluto and Eris. It is also the largest retrograde moon in the solar system. It comprises more than 99.5% of all the mass known to orbit Neptune, including the planet's rings and thirteen other known moons, [j] and is also more massive than all known moons in the Solar System smaller than itself combined. [k] Also, with a diameter 5.5% that of Neptune, it is the largest moon of a gas giant relative to its planet in terms of diameter, although Titan is bigger relative to Saturn in terms of mass (the ratio of Triton's mass to that of Neptune is approximately 1:4788). It has a radius, density (2.061 g/cm 3), temperature and chemical composition similar to that of Pluto. [33]

In the 1990s, various observations from Earth were made of the limb of Triton using the occultation of nearby stars, which indicated the presence of an atmosphere and an exotic surface. Observations in late 1997 suggest that Triton is heating up and the atmosphere has become significantly denser since Voyager 2 flew past in 1989. [48] Library used throughout SCALE that provides individual nuclides; elements with tabulated natural abundances; compounds, alloys, mixtures, and fissile solutions commonly encountered in engineering practice Stochastic uncertainty quantification in results based on uncertainties in nuclear data and input parameters

General purpose point depletion and decay code to calculate isotopic concentrations, decay heat, radiation source terms, and curie levels

streamlined light water reactor lattice physics depletion calculations and generation of few-group cross section data for use in nodal core simulatorsTriton was discovered by British astronomer William Lassell on October 10, 1846, [17] just 17days after the discovery of Neptune. When John Herschel received news of Neptune's discovery, he wrote to Lassell suggesting he search for possible moons. Lassell discovered Triton eight days later. [17] [18] Lassell also claimed for a period [h] to have discovered rings. [19] Although Neptune was later confirmed to have rings, they are so faint and dark that it is not plausible he saw them. A brewer by trade, Lassell spotted Triton with his self-built 61cm (24in) aperture metal mirror reflecting telescope (also known as the "two-foot" reflector). [20] This telescope was donated to the Royal Observatory, Greenwich in the 1880s, but was eventually dismantled. [20] Recent neutron, gamma and coupled neutron/gamma nuclear data libraries in continuous-energy and several multigroup structures for use in all transport modules A primary goal of SCALE is to provide robust calculations while reducing requirements for user input and knowledge of the intricacies of the underlying code and data architecture. SCALE provides standardized sequences to integrate many modern, advanced capabilities into a seamless calculation that the user controls from a single input file. Additional utility modules are provided primarily for post processing data generated from the analysis sequences for advanced studies. Input for SCALE sequences is provided in the form of text files using free-form input with extensive use of keywords and engineering-type input requirements. A GUI is provided to assist in the creation of input files, visualization of geometry and nuclear data, execution of calculations, viewing output, and visualization of results. An overview of the major SCALE capabilities and the analysis areas they serve is provided in Table 1, with additional descriptions provided below. Two large cryolava lakes on Triton, seen west of Leviathan Patera. Combined, they are nearly the size of Kraken Mare on Titan. These features are unusually crater free, indicating they are young and were recently molten.

Triton's revolution around Neptune has become a nearly perfect circle with an eccentricity of almost zero. Viscoelastic damping from tides alone is not thought to be capable of circularizing Triton's orbit in the time since the origin of the system, and gas drag from a prograde debris disc is likely to have played a substantial role. [4] [5] Tidal interactions also cause Triton's orbit, which is already closer to Neptune than the Moon is to Earth, to gradually decay further; predictions are that 3.6billion years from now, Triton will pass within Neptune's Roche limit. [26] This will result in either a collision with Neptune's atmosphere or the breakup of Triton, forming a new ring system similar to that found around Saturn. [26] Capture [ edit ] The Kuiper belt (green), in the Solar System's outskirts, is where Triton is thought to have originated. Triton's south polar region is covered by a highly reflective cap of frozen nitrogen and methane sprinkled by impact craters and openings of geysers. Little is known about the north pole because it was on the night side during the Voyager 2 encounter, but it is thought that Triton must also have a north polar ice cap. [44] Recent uncertainties in nuclear data for neutron interaction, fission product yields, and decay data for use in TSUNAMI tools and Sampler Due to constant erasure and modification by ongoing geological activity, impact craters on Triton's surface are relatively rare. A census of Triton's craters imaged by Voyager 2 found only 179 that were incontestably of impact origin, compared with 835 observed for Uranus's moon Miranda, which has only three percent of Triton's surface area. [70] The largest crater observed on Triton thought to have been created by an impact is a 27-kilometer-diameter (17mi) feature called Mazomba. [70] [71] Although larger craters have been observed, they are generally thought to be volcanic. [70]

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Surface gravity derived from the mass m, the gravitational constant G and the radius r: G m r 2 {\displaystyle {\frac {Gm}{r

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