Search results for "Plutonium-239" - New World Encyclopedia
From New World Encyclopedia
Page title matches
- Plutonium-239 is one of the three fissile materials used for the production of nuclear weapons and in some nuclear reactors as a source of energy ...37 KB (5,382 words) - 08:10, 24 November 2022
Page text matches
- (half-life 163 days) was made by bombarding a plutonium-239 target with alpha particles in the 60-inch cyclotron at Berkeley. The element was chemically ...10 KB (1,354 words) - 06:46, 12 January 2024
- Americium (chemical symbol Am, atomic number 95) is a radioactive, synthetic metallic element, classified as an actinide. It was the fourth transuranic ...9 KB (1,328 words) - 06:50, 25 July 2023
- Neptunium (chemical symbol Np, atomic number 93) is a silvery radioactive metallic element, belonging to the actinide series. It is the first ...11 KB (1,451 words) - 16:21, 11 November 2022
- Einsteinium (chemical symbol Es, atomic number 99) is a synthetic element in the periodic table. A metallic, highly radioactive, transuranic element ...7 KB (940 words) - 00:06, 13 February 2024
- If a chemical element can exist in two or more different forms, the forms are known as allotropes of the element, and this type of behavior is ...5 KB (685 words) - 08:09, 23 July 2023
- Plutonium-239 is one of the three fissile materials used for the production of nuclear weapons and in some nuclear reactors as a source of energy ...37 KB (5,382 words) - 08:10, 24 November 2022
- isotopes used for nuclear fuel, 235U and plutonium-239 (239Pu), because of its higher neutron yield per neutron absorbed. Given a start with some other ...14 KB (1,909 words) - 23:00, 30 April 2023
- Nuclear fission is the splitting of the nucleus of an atom into parts (lighter nuclei), often producing photons (in the form of gamma rays), ...31 KB (4,827 words) - 10:09, 11 March 2023
- tiny bit of plutonium from the mass of uranium. Plutonium-239 was isolated in visible amounts using a transmutation reaction on August 20, 1942 and weighed ...29 KB (4,299 words) - 07:54, 24 January 2023
- The other fissionable nucleus is plutonium-239. This is not to be ... was uranium-235; the Nagasaki bomb was plutonium-239. In both bombs, the chain ...52 KB (8,009 words) - 11:05, 9 March 2023
- atomic nucleus (usually uranium-235 or plutonium-239) absorbs a neutron it ... This U-239 atom will soon decay into plutonium-239, which is another fuel ...45 KB (6,704 words) - 00:40, 17 November 2022
- Fermium (chemical symbol Fm, atomic number 100) is a synthetic element in the periodic table. A highly radioactive metallic transuranic element ...7 KB (998 words) - 17:26, 26 March 2024
- Beryllium (chemical symbol Be, atomic number 4) ranks among the lightest of all known metals. Steel-gray in color, it is strong but brittle. ...16 KB (2,296 words) - 17:26, 29 September 2023
- fission products of both uranium-235 and plutonium-239, and therefore used as indicators of nuclear explosions. The artificial isotope Xe-135 ...13 KB (1,905 words) - 14:16, 20 May 2023
- North Korea claims to possess nuclear weapons, and the CIA asserts that it has a substantial arsenal of chemical weapons. North Korea, a member ...25 KB (3,635 words) - 06:33, 16 November 2022
- that subsequently decays to the isotope plutonium-239, which also is fissile. ... mechanism that uses uranium-238-derived plutonium-239. Later, a much more complicated ...48 KB (6,867 words) - 15:33, 16 January 2024
- Note that its half-life is less than that of plutonium-239 by a factor of multiple thousands to tens of thousands. Promethium has no biological role. ...11 KB (1,429 words) - 23:55, 1 December 2022
- |- | colspan="2" align="center" | [[image:Ga,31.jpg|125px|Typical (melted blob)]] [[Image:Gallium1_640x480.jpg|130px|Crystallized ...15 KB (2,122 words) - 04:06, 18 April 2024
- Actinium (chemical symbol Ac, atomic number 89) is a silvery, radioactive, metallic element. Due to its intense radioactivity, it glows in the ...7 KB (911 words) - 05:39, 15 June 2023
- fissile atomic nucleus (usually uranium-235 or plutonium-239) is struck by a neutron, it forms two or more smaller nuclei as fission products, releasing ...49 KB (7,262 words) - 10:10, 11 March 2023
