{alpha} decay of {sup 238}Cm and the new isotope {sup 237}Cm

Alpha decays of {sup 237}Cm and {sup 238}Cm have been studied using a gas-jet coupled on-line isotope separator. The new isotope {sup 237}Cm has been identified through the detection of 6656{+-}10 keV {alpha} particles. The {alpha} energy of {sup 238}Cm has been revised more precisely than the previous one. The {alpha} transition to the first excited 2{sup +} state in {sup 234}Pu has also been observed. It was found that the 2{sup +} energy in {sup 234}Pu is much higher than those in heavier Pu isotopes.