A SOURCE OF POLARIZED ELECTRONS

被引：15

作者：

BAUM, G

KOCH, U

机构：

来源：

NUCLEAR INSTRUMENTS & METHODS | 1969年 / 71卷 / 02期

关键词：

D O I：

10.1016/0029-554X(69)90011-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Investigations on a source of polarized electrons intended for use in an accelerator are reported. An intense potassium atomic beam is polarized to a degree of 0.8 by a magnetic six-pole field. The valence electrons are set free by ultraviolet light of a Xe flash tube. The polarization P of the photoelectrons is measured by Mott scattering at 120 keV. We obtain P = 0.55±0.05. The intensity of the source is 107 electrons/pulse with a pulse length of 20 μsec. The maximum possible repetition rate is 50 Hz and will result in 5 × 108 electrons/sec. With a Li atomic beam and improved lamp operation an intensity increase by a factor of 50 is expected. © 1969.

引用

页码：189 / &

共 27 条

[1]

BIER K, 1963, 3RD P INT S RAR GAS, V1, P478

[2] EXPERIMENTE ZUR HERSTELLUNG POLARISIERTER ELEKTRONEN AUS ATOMSTRAHLEN [J].

BOPP, F ;

MAISON, D ;

REGENFUS, G ;

SIEGMANN, HC .

ZEITSCHRIFT FUR PHYSIK, 1965, 185 (01) :48-&

[3] PRECISION MEASUREMENT OF LONGITUDINAL POLARIZATION OF BETAS FOLLOWING P32 DECAY [J].

BROSI, AR ;

GALONSKY, AI ;

WILLARD, HB ;

KETELLE, BH .

NUCLEAR PHYSICS, 1962, 33 (03) :353-+

[4]

COIFFET P, 1967, CR ACAD SCI B PHYS, V264, P454

[5]

DEGRUYTER W, 1949, ULTRAVIOLETTE STR ED, P140

[6] ENHANCED ULTRAVIOLET OUTPUT FROM DOUBLE-PULSED FLASH LAMPS [J].

EMMETT, JL ;

SCHAWLOW, AL .

APPLIED PHYSICS LETTERS, 1963, 2 (11) :204-206

[7]

FARAGO PS, 1965, ADVAN ELECTRON ELECT, V21, P1

[8]

FRAUENFELDER H, 1963, METHODS EXPT PHYSICS, V5, P214

[9] OPTISCHE ABBILDUNG MIT NEUTRALEN ATOMEN [J].

FRIEDBURG, H ;

PAUL, W .

NATURWISSENSCHAFTEN, 1951, 38 (07) :159-160

[10]

FRIEDMANN H, 1961, SITZBER BAYR AKAD WI, P13

← 1 2 3 →