Submitted on: 27 February 2005.
Revised on: 04 April 2005.
Accepted on: 04 May 2005.
___________________APL Materials---AIP PUBLISHING
Submitted on: 14 April 2003.
Revised on: 05 August 2003.
Accepted on: 31 August 2003.
___________________APL Materials---AIP PUBLISHING
Submitted on: 18 November 2004.
Revised on: 23 January 2005.
Accepted on: 07 March 2005.
___________________APL Materials---AIP PUBLISHING
Submitted on: 12 January 1999.
Revised on: 04 February 1999.
Accepted on: 02 April 1999.
___________________APL Materials---AIP PUBLISHING
http://reply.papertrans.cn/1/22/2108/2108-35.png
http://reply.papertrans.cn/1/22/2108/2108-36.png