Author Affiliations

O Meighan,¹ L Dardis,¹ C Moloney,¹ C McGuinness,¹ J T Costello,¹ C L S Lewis,² R O'Rourke,² A MacPhee,² I C E Turcu,³ C Danson,³ S Huntingdon,³ N Takeyasu,³ and W Shaikh³

¹School of Physical Sciences, Dublin Citv University, Dublin 9, Ireland, Phone:+353-1-7045519 & Fax: +353-1-7045384

²Queens University of Belfast, Belfast BT7 INN, Northern Ireland, Phone:+44-1232-273121 & Fax:+44-1232-310785

³Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, England, Phone:+44-1235-446260 & Fax: +44-1235-445888