The Coulomb barrier height for `alpha` particle emission is 30.0MeV. What is the barrier height for `._(6)C^(14)`? The required data is
`m(._(88)Ra^(223))=223.01850u , m(._(82)Pa^(209))=208.98107u , m(._(86)Rn^(219))=219.00948u, m(._(6)C^(14))=14.00324u , m(._(2)He^(4))=4.00260u`

Under certain circumstances , a nucleus can decay by emitting a particle more massive than an alpha -particle. Consider the following decay processes. (a) ._88^223Ra to ._82^209Pb + ._6^14C , (b) ._88^223Ra to ._86^219 Rn + ._2^4He Calculate the Q-values for these two decays and determine that both are energetically possible. m(._88^223Ra) =223.01850 u, m(._82^209Pb) =208.98107 u, m(._86^219Rn) = 219.00948 u, m(._6^14C) = 14.00324 u and m(._2^4He) =4.00260 u

Find the Q value and the kinetic energy of emitted alpha particle in the alpha decay of (a) ._88Ra^(226) (b) ._86Rn^(220) . Given m(._88Ra^(226))=226.02540u, m(._86Rn^(222))=222.01750u (b) m(._86Rn^(220))=220.01137u , m(._84Po^(216))=216.00189u and m._(alpha)=4.00260u.

Find Q-value and kinetic energy of the emitted alpha -particle in the alpha -decay of (a) ._88^222Ra and (b) ._86^220Rn . Given , m(._86^226Ra) = 226.02540 u, m(._26^222Rn) = 222.01750 u, m(._86^220Rn) = 220.01137 u, m(._84^216Po) = 216.00189 u , m(._2^4He) =4.00260 u

In a star, three alpha particle join in a single reaction to form ._(6)C^(12) nucleus. Calcuate the energy released in the reaction Given : m(._(2)He^(4)) = 4.002604 am u, " " m(._(6)C^(12)) = 12.000000 am u

Find the Q-value and the kinetic energy of the emitted alpha -particle in the alpha -decya of (a) ""_(88)^(226)Ra and (b) ""_(86)^(220)Rn . Given m (""_(88)^(226)Ra) = 226.02540 u, " " m(""_(86)^(222)Rn) = 222.01750 u . m(""_(86)^(220)Rn) = 220.01137 u, " " m (""_(84)^(216)Po) = 216.00189u .