Thank you. The title of my talk is the sequential release of two electrons from the atomic targets like Ne and Ar.The whole presentation is consists of two part. In the first part ,I dealt with the measurement of time correlation of two electrons and in that part you will see we where we are and what are the big problem that we are facing up. In the second part, we have tried to see the angular correlation in different way by measuring the momentum of doubly charged ion.