- of a
second 300 rs: The mean
lifetime of W and Z
bosons 10−24
yoctosecond ys
Yoctosecond, (yocto- + second), is one
septillionth of a
second 23 ys: The...
- half-lives
between approximately 10−19 and 10−10 seconds. Twenty-three
yoctoseconds is the time
needed to
traverse a 7-femtometre
distance at the
speed of...
- {ys}}]}}&{\ce {{^{3}_{1}H}+{2_{0}^{1}n}}}\\{}\end{array}}}
Decay times are in
yoctoseconds (10−24 s) for all
these isotopes except 3 H ,
which is
expressed in years...
- shortest-lived
isotope is the
unbound 11 O with a half-life of 198(12)
yoctoseconds,
though half-lives have not been
measured for the
unbound heavy isotopes...
- 92(24) milliseconds. The
least stable is 10 He , with a half-life of 260(40)
yoctoseconds (2.6(4)×10−22 s),
although it is
possible that 2 He may have an even...
- 4Li,
which decays by
proton emission with a half-life of
about 91(9)
yoctoseconds (9.1(9)×10−23 s),
although the half-life of 3Li is yet to be determined...
- The
least stable known isotope is 14 F ,
whose half-life is 500(60)
yoctoseconds,
corresponding to a
resonance width of 910(100) keV. mF –
Excited nuclear...
- shortest-lived
known isotope is nitrogen-10, with a half-life of 143(36)
yoctoseconds,
though the half-life of nitrogen-9 has not been
measured exactly. mN –...
- 30 milliseconds. The
least stable isotope is 16 Be , with a half-life of 650(130)
yoctoseconds. The 1:1 neutron–proton
ratio seen in
stable isotopes of many
light elements...
- zs
zeptosecond 1021 s Zs
zettasecond 31.7
trillion years 10−24 s ys
yoctosecond 1024 s Ys
yottasecond 31.7
quadrillion years 10−27 s rs
rontosecond 1027...
