• Naturally occurring neodymium (60Nd) is composed of 5 stable isotopes, 142Nd, 143Nd, 145Nd, 146Nd and 148Nd, with 142Nd being the most abundant (27.2%...
    16 KB (1,029 words) - 01:16, 15 May 2024
  • Thumbnail for Neodymium
    Additionally, some observationally stable isotopes of samarium are predicted to decay to isotopes of neodymium. Neodymium isotopes are used in various scientific...
    59 KB (6,824 words) - 09:23, 18 May 2024
  • The long lived isotopes, 146Sm, 147Sm, and 148Sm, primarily decay by alpha decay to isotopes of neodymium. Lighter unstable isotopes of samarium primarily...
    23 KB (1,729 words) - 18:32, 14 April 2024
  • long-lived samarium isotope (147 Sm) to the stable radiogenic neodymium isotope (143 Nd). Neodymium isotope ratios together with samarium-neodymium ratios are...
    14 KB (1,869 words) - 05:07, 4 March 2024
  • heavier isotopes is beta decay. The primary decay products before 146Pm are isotopes of neodymium, and the primary products after are isotopes of samarium...
    17 KB (829 words) - 01:16, 15 May 2024
  • Thumbnail for Promethium
    stabilities of neighbor element isotopes; it is also the least stable element of the first 84. The primary decay products are neodymium and samarium isotopes (promethium-146...
    39 KB (4,703 words) - 03:03, 26 April 2024
  • Thumbnail for Stable nuclide
    elements, they are usually termed stable isotopes. The 80 elements with one or more stable isotopes comprise a total of 251 nuclides that have not been known...
    28 KB (3,356 words) - 06:02, 19 May 2024
  • Thumbnail for Natural nuclear fission reactor
    Natural nuclear fission reactor (category Geography of Gabon)
    subtract the natural neodymium and gain access to the isotopic composition of neodymium produced by the fission of 235 U . The two isotopes 143 Nd and 145 Nd...
    24 KB (3,078 words) - 14:34, 18 May 2024
  • Thumbnail for Praseodymium
    capture to isotopes of cerium, while that of heavier isotopes is beta decay to isotopes of neodymium. In 1751, the Swedish mineralogist Axel Fredrik Cronstedt...
    37 KB (4,819 words) - 02:06, 4 May 2024
  • Thumbnail for Samarium
    Samarium (redirect from History of samarium)
    isotopes are predicted to decay to isotopes of neodymium. The long-lived isotopes 146Sm, 147Sm, and 148Sm undergo alpha decay to neodymium isotopes....
    71 KB (8,156 words) - 09:10, 19 April 2024
  • Thumbnail for Cerium
    Cerium (redirect from History of cerium)
    of the heavier isotopes is beta decay to isotopes of praseodymium. Some isotopes of neodymium can alpha decay or are predicted to decay to isotopes of...
    49 KB (5,785 words) - 06:47, 3 May 2024
  • This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days...
    69 KB (284 words) - 18:58, 19 May 2024
  • The environmental isotopes are a subset of isotopes, both stable and radioactive, which are the object of isotope geochemistry. They are primarily used...
    21 KB (2,979 words) - 20:33, 13 May 2024
  • Thumbnail for List of elements by stability of isotopes
    11 have 5 stable isotopes, 9 have 4 stable isotopes, 5 have 3 stable isotopes, 16 have 2 stable isotopes, and 26 have 1 stable isotope. Additionally, about...
    37 KB (2,204 words) - 17:11, 25 March 2024
  • before 141Pr are element 58 (cerium) isotopes and the primary products after are element 60 (neodymium) isotopes. mPr – Excited nuclear isomer. ( ) –...
    13 KB (568 words) - 14:23, 28 December 2023
  • Thumbnail for Primordial nuclide
    nuclides List of elements by stability of isotopes Big Bang nucleosynthesis Samir Maji; et al. (2006). "Separation of samarium and neodymium: a prerequisite...
    24 KB (2,090 words) - 18:11, 18 April 2024
  • Extinct isotopes of superheavy elements are isotopes of superheavy elements whose half-lives were too short to have lasted through the formation of the Solar...
    6 KB (680 words) - 18:50, 9 April 2024
  • Isotope geochemistry is an aspect of geology based upon the study of natural variations in the relative abundances of isotopes of various elements. Variations...
    21 KB (2,408 words) - 19:03, 1 April 2024
  • Thumbnail for Last Glacial Maximum
    Last Glacial Maximum (category CS1 maint: DOI inactive as of January 2024)
    was reduced, as measured by the increased proportion of radiogenic isotopes in neodymium isotope ratios. There is controversy whether upwelling off the...
    71 KB (7,842 words) - 06:28, 27 April 2024
  • available from long-lived isotopes, short-lived isotopes that are no longer present in the rock can be used. At the beginning of the solar system, there...
    44 KB (5,517 words) - 02:21, 14 March 2024
  • has isotopes that are not radioactive, these are termed "stable" isotopes. All of the known stable isotopes occur naturally (see primordial isotope). The...
    76 KB (9,881 words) - 18:50, 12 April 2024
  • Samarium-147 (category Isotopes of samarium)
    normalize the radiogenic isotope in the isochron because it is a slightly radioactive and relatively abundant neodymium isotope. The Sm-Nd isochron is defined...
    5 KB (457 words) - 10:41, 18 August 2023
  • Thumbnail for Fission products (by element)
    Given the stability of its next lighter and heavier isotopes and the high cross section those isotopes exhibit for various neutron reactions, it is likely...
    34 KB (4,505 words) - 16:11, 10 March 2024
  • Thumbnail for Isotope-ratio mass spectrometry
    The analysis of 'stable isotopes' is normally concerned with measuring isotopic variations arising from mass-dependent isotopic fractionation in natural...
    20 KB (2,548 words) - 01:53, 25 April 2024
  • Should the synthesis of unbiunium isotopes in such a reaction be successful, the resulting nuclei would decay through isotopes of ununennium that could...
    36 KB (7,383 words) - 11:04, 15 May 2024
  • expected to fall within the range of the island of stability, potentially conferring additional stability on some isotopes, especially 306Ubb which is expected...
    37 KB (7,056 words) - 11:04, 15 May 2024
  • will alpha decay, possibly reaching flerovium and livermorium isotopes, and heavier isotopes will decay by spontaneous fission. This study and a quantum...
    35 KB (7,027 words) - 02:04, 5 February 2024
  • Thumbnail for Ununennium
    synthesis of ununennium, as isotopes with half-lives below one microsecond would decay before reaching the detector, and the heavier isotopes cannot be...
    42 KB (8,085 words) - 09:47, 15 May 2024
  • Thumbnail for Uranium
    Uranium (redirect from History of uranium)
    trace isotopes 237U and 239U exclusively undergo beta decay, with respective half-lives of 6.752 days and 23.45 minutes. In total, 28 isotopes of uranium...
    110 KB (12,403 words) - 09:40, 16 April 2024
  • Thumbnail for Fermium
    Fermium (redirect from Compounds of fermium)
    synthesized by neutron-capture. Because of this impediment in forming heavier isotopes, these short-lived isotopes 258–260Fm constitute the "fermium gap...
    32 KB (4,010 words) - 12:23, 11 May 2024