Hydrogen-4

Hydrogen-4

Infobox isotope
alternate_names =
symbol =H
mass_number =4
mass =4.0279121
num_neutrons =3
num_protons =1
abundance =
halflife =9.93696x10-23 seconds
error_halflife =
background =#eee
text_color =


decay_product =
decay_symbol =
decay_mass =
decay_mode1 =
decay_energy1 =
decay_mode2 =
decay_energy2 =
decay_mode3 =
decay_energy3 =
decay_mode4 =
decay_energy4 =
parent =
parent_symbol =
parent_mass =
parent_decay =
parent2 =
parent2_symbol =
parent2_mass =
parent2_decay =
spin =2
excess_energy =
error1 =
binding_energy =
error2 =

Hydrogen-4 is a highly unstable isotope of hydrogen. The nucleus consists of a proton and three neutrons. It has been synthesised in the laboratory by bombarding tritium with fast-moving deuterium nuclei (see [http://content.aip.org/APCPCS/v610/i1/920_1.html this article] ). In this experiment, the tritium nuclei captured neutrons from the fast-moving deuterium nucleus. The presence of the hydrogen-4 was deduced by detecting the emitted protons. Its atomic mass is 4.0279121. It decays through neutron emission and has a half-life of 9.93696x10-23 seconds.

Quadium

In the 1955 satirical novel "The Mouse That Roared", the name quadium was given to the hydrogen-4 isotope that powered the "Q-bomb" that the Duchy of Grand Fenwick captured from the United States.

ee also

*Isotopes of hydrogen

Isotope|element=Hydrogen
lighter=Hydrogen-3
heavier=Hydrogen-5
before=None
after=Hydrogen-3


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