PROJECTILE VELOCITY DEPENDENCES OF THE 2P AND 4P COMPONENTS IN FAST HE+ BEAMS AT EMERGENCE FROM A CARBON FOIL

被引:4
作者
MAZUY, B
BELKACEM, A
CHEVALLIER, M
CLOUVAS, A
GAILLARD, MJ
POIZAT, JC
REMILLIEUX, J
DESESQUELLES, J
机构
[1] UNIV LYON 1,INST NATL PHYS NUCL & PHYS PARTICLES,F-69622 VILLEURBANNE,FRANCE
[2] UNIV LYON 1,SPECTROMETRIE ION & MOLEC LAB,CNRS,F-69622 VILLEURBANNE,FRANCE
[3] ARISTOTELIAN UNIV SALONIKA,DEPT ELECT ENGN,SALONIKA,GREECE
关键词
BAND STRUCTURE - CARBON - Radiation Effects - HELIUM - Ionization - PHYSICS - Atomic;
D O I
10.1016/0168-583X(88)90335-7
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The velocity dependences of the population of 2p and 4p states in fast (0. 4-2 MeV) He** plus ion beams transmitted through a thin carbon foil have been measured. They are found to be quite different to each other. These results are analyzed in the framework of a simple model based on the possibility for a given excited state to be formed inside the solid. The conclusion is that in the studied velocity range the 2p state can exist in carbon whereas the 4p state cannot.
引用
收藏
页码:382 / 385
页数:4
相关论文
共 16 条
[2]   EQUILIBRIUM CHARGE-STATE FRACTIONS OF 0.2 TO 6.5 MEV HELIUM IONS IN CARBON [J].
ARMSTRONG, JC ;
MULLENDORE, JV ;
HARRIS, WR ;
MARION, JB .
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1965, 86 (554P) :1283-+
[3]   POPULATIONS OF 2P-TERMS AND 3P-TERMS IN HYDROGEN EXCITED BY H+, H-2(+), AND H-3(+) IONS PASSING THROUGH THIN CARBON FOILS [J].
BAUDINETROBINET, Y ;
DUMONT, PD .
PHYSICAL REVIEW A, 1984, 29 (04) :1825-1831
[4]  
BOHR N, 1948, K DAN VIDENSK SELSK, V18
[5]  
BRANDT W, 1975, ATOMIC COLLISIONS SO, P261
[6]  
BRANDT W, 1975, PHYS LETT A, V37, P115
[7]   SIMULTANEOUS STUDY OF NON-EQUILIBRATED CHARGE AND EXCITATION STATES OF MEV AMU LIGHT ATOMIC AND MOLECULAR-IONS EMERGING FROM THIN SOLID TARGETS [J].
CLOUVAS, A ;
GAILLARD, MJ ;
DEPINHO, AG ;
POIZAT, JC ;
REMILLIEUX, J ;
DESESQUELLES, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1984, 2 (1-3) :273-279
[8]  
CLOUVAS A, 1985, THESIS LYON
[9]  
CLOUVAS A, 1982, THESIS LYON
[10]   CHARGE STATES OF FAST PROTONS IN SOLIDS [J].
CROSS, MC .
PHYSICAL REVIEW B, 1977, 15 (02) :602-607