Measurement of characteristic X-rays by positron impact

被引：5

作者：

Nagashima, Y

Saito, F

Itoh, Y

Goto, A

Hyodo, T

机构：

[1] Univ Tokyo, Grad Sch Arts & Sci, Inst Phys, Meguro Ku, Tokyo 1538902, Japan

[2] RIKEN, Wako, Saitama 3510198, Japan

来源：

POSITRON ANNIHILATION, ICPA-13, PROCEEDINGS | 2004年 / 445-6卷

关键词：

characteristic X-rays; inner-shell ionization cross-section;

D O I：

10.4028/www.scientific.net/MSF.445-446.440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An X-ray detector with thin Si(Li) crystals has been fabricated and employed to detect the characteristic X-rays by positron impact. Use of thin detector crystals is essential for the measurements of the characteristic X-rays induced by positron impact. Otherwise the background produced in the crystals by the annihilation gamma-rays is too large to isolate the X-ray peaks. The data has been analyzed to obtain the inner-shell ionization cross sections by positron impact.

引用

收藏

页码：440 / 442

页数：3

相关论文

共 10 条

[1] MESSUNG DES WIRKUNGSQUERSCHNITTS FUR K-IONISIERUNG DURCH NEGATONEN- UND POSITONENSTOSS [J].

HANSEN, H ;

FLAMMERSFELD, A ;

WEIGMANN, H .

NUCLEAR PHYSICS, 1964, 58 (02) :241-&

[2] MESSUNG DES WIRKUNGSQUERSCHNITTS FUR K-IONISIERUNG DURCH STOSS NIEDERENERGETISCHER NEGATONEN UND POSITONEN [J].

HANSEN, H ;

FLAMMERSFELD, A .

NUCLEAR PHYSICS, 1966, 79 (01) :135-+

[3] INNER-SHELL IONIZATION OF SILVER BY 100-400-KEV ELECTRONS AND POSITRONS [J].

ITO, S ;

SHIMIZU, S ;

KAWARATANI, T ;

KUBOTA, K .

PHYSICAL REVIEW A, 1980, 22 (02) :407-412

[4] K-, L-, and M-shell ionization of atoms by electron and positron impact [J].

Khare, SP ;

Wadehra, JM .

CANADIAN JOURNAL OF PHYSICS, 1996, 74 (7-8) :376-383

[5]

NAGASHIMA Y, UNPUB

[6] A high-efficiency positron moderator using electro-polished tungsten meshes [J].

Saito, F ;

Nagashima, Y ;

Wei, L ;

Itoh, Y ;

Goto, A ;

Hyodo, T .

APPLIED SURFACE SCIENCE, 2002, 194 (1-4) :13-15

[7] COMPARISON OF INNER-SHELL IONIZATION BY RELATIVISTIC ELECTRON AND POSITRON IMPACT [J].

SCHIEBEL, U ;

BENTZ, E ;

MULLER, A ;

SALZBORN, E ;

TAWARA, H .

PHYSICS LETTERS A, 1976, 59 (04) :274-276

[8] ABSOLUTE CROSS-SECTIONS FOR INNER-SHELL IONIZATION BY LEPTON IMPACT [J].

SCHNEIDER, H ;

TOBEHN, I ;

EBEL, F ;

HIPPLER, R .

PHYSICAL REVIEW LETTERS, 1993, 71 (17) :2707-2709

[9] CROSS-SECTION RATIO FOR K-SHELL IONIZATION OF COPPER BY LOW-ENERGY ELECTRONS AND POSITRONS [J].

SCHULTZ, PJ ;

CAMPBELL, JL .

PHYSICS LETTERS A, 1985, 112 (6-7) :316-318

[10] POSITRON IMPACT INNER SHELL IONIZATION [J].

SEIFELNA.SA ;

BERENYI, D ;

BIBOK, G .

ZEITSCHRIFT FUR PHYSIK, 1974, 271 (03) :207-210