The minimum kinetic energy needed by an alpha particle to cause the nuclear reaction \(^{16}_{7}\text{N} + ^{4}_{2}\text{He} \rightarrow ^{1}_{1}\text{H} + ^{19}_{8}\text{O}\) in a laboratory frame is n (in MeV). Assume that \(^{16}_{7}\text{N}\) is at rest in the laboratory frame. The masses of \(^{16}_{7}\text{N} , ^{4}_{2}\text{He} , ^{1}_{1}\text{H}\ \text{and}\ ^{19}_{8}\text{O}\) can be taken to be 16.006u,4.003u, 1.008u and 19.003u, respectively, where 1u=930MeVc−2. The value of n is ________