THE DEVELOPMENT OF PLUNGER DEVICE FOR LIFETIME MEASUREMENTS IN CIAE

The lifetime knowledge of a nuclear state provides the essential information on transition probabilities for comparison with theoretical nuclear models. A well-known method for picosecond lifetime measurements of excited nuclear states is Recoil Distance Doppler Shift (RDDS) method. Correspondingly a new plunger based on this technique has been developing in CIAE. We use CAD software and Labview to finish the plunger model design and develop a closed control software. A series of methods such as capacitance method, new skills to flatten the foils etc. are applied in building this plunger. Some tests and the latest results with motion and finite element analysis simulations are discussed in this report.