Nuclidic Mass Formula on a Spherical Basis with an Improved Even-Odd Term

1Advanced Science Research Center, Japan Atomic Energy Research Institute (JAERI), Ibaraki 319-1195, Japan 2Senior High School of Waseda University, Tokyo 177-0044, Japan 3Advanced Research Institute for Science and Engineering, Waseda University, Tokyo 169-8555, Japan 4Ministry of Education, Culture, Sports, Science and Technology, Tokyo 100-8959, Japan 5The Institute of Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan