Slow positron beam facility in Orleans

被引：41

作者：

Desgardin, P

Liszkay, L

Barthe, MF

Henry, L

Briaud, J

Saillard, M

Lepolotec, L

Corbel, C

Blondiaux, G

Colder, A

Marie, P

Levalois, M

机构：

[1] Ctr Etud & Rech Irradiat, CNRS, FR-45071 Orleans 2, France

[2] KFKI Res Inst Nucl & Particle Phys, HU-1525 Budapest, Hungary

[3] Lab Etud & Rech Mat, FR-14050 Caen, France

来源：

POSITRON ANNIHILATION - ICPA-12 | 2001年 / 363-3卷

关键词：

defects; germanium; ion-implantation; slow positron beam;

D O I：

10.4028/www.scientific.net/MSF.363-365.523

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A magnetically guided slow positron beam with variable energy up to 50 keV has been built in the positron laboratory of CERI (Orleans). The accelerator is coupled with a Doppler broadening spectrometer. A 4 mum polycrystalline W foil is used to moderate the positrons. The speed selection of positrons is performed with a 90 degrees elbow. An activity of about 6 mu Ci was measured on the sample holder with a conventional 60 mCi Na-22 positron source of 6 mm in diameter. We measured the electron momentum distributions in the first micron of heavy ions (Pb, Ar) implanted n-type Ge. Different ion fluences are compared.

引用

页码：523 / 525

页数：3