The spins and parities of all three states are provided on the upper left-hand side of the level.The multipolarity of the gamma ray (magnetic dipole, M1, plus 0.005 percent electric quadrupole, E2) is indicated above the vertical arrow symbolizing the gamma transition.
An example is the decay of the uranium daughter product thorium-234 into protactinium-234: In the above reaction for beta decay, photons and are without rest mass or charge.Our objective was to provide a deeper understanding on deadwood decay in a Mediterranean montane environment by focussing on semi-natural forests of L. The decay process was studied in a field experiment (in the Majella mountains, Apennine Mountains, Italy) among an altitudinal transect at different climatic conditions.Beech wood blocks (mass, cellulose, lignin) having all an equal in size (5 cm × 5 cm × 2 cm) were placed in soil mesocosms to investigate over one year changes in the overall mass, cellulose and lignin content. Deadwood, cellulose and lignin dynamics were related to soil parameters (p H, grain size, moisture, temperature) and climate data.An unstable nucleus will decompose spontaneously, or decay, into a more stable configuration but will do so only in a few specific ways by emitting certain Rates of radioactive transitions).
The product of a radioactive decay process—called the daughter of the parent isotope—may itself be unstable, in which case it, too, will decay.
The proton is the nucleus of ordinary hydrogen and is stable.