52 minutes). The isotopes of promethium range in mass number from 126 to 166. The primary decay mode for 146Pm and lighter isotopes is electron capture...

Promethium is a chemical element with symbol Pm and atomic number 61. All of its isotopes are radioactive; it is extremely rare, with only about 500–600...

capture to isotopes of promethium, while heavier ones decay by beta decay to isotopes of europium. A 2012 paper revising the estimated half-life of 146Sm from...

Stable nuclide Stable isotope ratio Table of nuclides See Stability of technetium isotopes and Stability of promethium isotopes for a detailed discussion...

mildly to moderately toxic, but the insoluble ones are not. All isotopes of promethium are radioactive, and it does not occur naturally in the earth's...

light-years away in the constellation Cassiopeia Promethium-147, an isotope of promethium with a half-life of 2.62 years JWH-147 is an analgesic drug used...

with Z = 1 through 81, of which 39 have stable isotopes (technetium ( 43Tc ) and promethium ( 61Pm ) have no stable isotopes). Of these 39 odd Z elements...

This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days...

radioisotopes are praseodymium isotopes and the primary products for heavier ones are promethium isotopes. Neodymium is one of the more common fission products...

all have stable isotopes, with the exceptions of technetium (Z = 43) and promethium (Z = 61). For convenience, three different views of the data are available...

usually called that element's stable isotopes. The 80 elements with one or more stable isotopes comprise a total of 251 nuclides that have not been shown...

isomers. Among other isotopes: astatine-210 and the lighter isotopes decay by positron emission; astatine-217 and the heavier isotopes undergo beta decay;...

Technetium (43Tc) is one of the two elements with Z < 83 that have no stable isotopes; the other such element is promethium. It is primarily artificial...

in the decay chain of the primordial isotopes thorium-232, uranium-238, and uranium-235. Examples include the natural isotopes of polonium and radium...

synthesis of ununennium, as isotopes with half-lives below one microsecond would decay before reaching the detector, and the heavier isotopes cannot be...

stable isotope and three additional primordial elements have only radioactive isotopes (bismuth, thorium, and uranium). Some unstable isotopes which occur...

the material. In the second half of the 20th century, radium was progressively replaced with promethium-147. Promethium is only a relatively low-energy...

isotope (except for technetium, element 43 and promethium, element 61, which have no stable isotopes). Isotopes considered stable are those for which no radioactive...

fictional chemical elements, materials, isotopes or subatomic particles that either a) play a major role in a notable work of fiction, b) are common to several...

weighted average abundance of natural isotopes in Earth's crust and atmosphere. For synthetic elements, there is no "natural isotope abundance". Therefore...

or more radioactive substances selected from promethium, tritium and radium is applied on the surface of the dial plate, etc to give self luminous properties...

of radioactive power. Several neodymium isotopes have been used for the production of other promethium isotopes. The decay from 147Sm (t1/2 = 1.06×1011 y)...

element whose isotopes are all radioactive. Technetium and promethium are the only radioactive elements whose neighbours in the sense of atomic number...

the luminosity of promethium dials also dropped by half every 2.62 years, giving them a short useful life, which led to promethium's replacement by tritium...

expected to fall within the range of the island of stability, potentially conferring additional stability on some isotopes, especially 306Ubb which is expected...

Mirzadeh, Saed (February 2019). "Reactor production of promethium-147". Applied Radiation and Isotopes. 144: 54–63. Bibcode:2019AppRI.144...54B. doi:10.1016/j...

the University of California at Berkeley in 1952. After earning her Ph.D. in 1952, specializing in promethium isotopes at the University of California, Berkeley...

isotopes are produced in significant quantities by fission but are not yet being reclaimed. Other isotopes are manufactured by neutron irradiation of...

all its isotopes have half-lives of 8.1 hours or less, decaying into other astatine isotopes, bismuth, polonium, or radon. Most of its isotopes are very...

shorter-lived nuclides have been detected in the spectra of stars, such as isotopes of technetium, promethium, and some actinides. The remaining nuclides are known...