Radiative Recomination Ions with Cooling Electron

UWAGA- JEŚLI W PARAMETRACH SĄ RÓZNICE DATY, STRON, WYDAWNICTWA ITP. PATRZ ZAWSZE NA OPIS AUKCJI ON JEST NAJWAŻNIEJSZY.

Opis przedmiotu

AutorMarek PajekTytułRadiative Recomination of Ions with Cooling ElectronsRok wydaniaWydawnictwoilustracje zdjęcia rysunkiStronOkładka, oprawaStan i inne informacje1993WSPtak102MIĘKKANOWA, leżak magazynowyOpis

Abstract

Radiative recombination of ions with low-energy free electrons

during the electron cooling of ion beams in storage rings is discussed

both from theoretical and experimental point of view. In low-energy

approximation valid for cooling conditions most of the quantities

characterizing the radiative recombination process, as the cross sec-

tions, recombination rates, photon angular distributions and po-

larization, are obtained in closed forms within the nonrelativistic

dipole approximation. An influence of the field-ionization effect on

measured total recombination rates in experiments at storage rings

is discussed. Theoretical predictions on radiative recombination are

compared with the experimental results on radiative recombination

of deuterons with free electrons from the experiment performed

in the electron cooler at CRYRING storage ring. A role of the

field-ionization effect and possible contribution of the Collisional-

radiative recombination to measured recombination rates is dis-

cussed. Present applications of ion cooling storage rings in atomic

collision physics, and the perspectives in this field are reviewed.

spis treści lub fragment

Contents

1 Introduction 7

2 Electron cooling in storage rings 11

2.1 Electron cooling .................... 11

2.2 Storage ring facilities ................. 14

3 Electron-ion recombination in the electron cooler 17

3.1 Radiative recombination ............... 19

3.2 Dielectronic recombination .............. 21

3.3 Collisional (three-body) recombination ....... 23

3.4 Induced radiative recombination ........... 24

3.5 Molecular dissociative recombination ........ 25

4 Radiative recombination 29

4.1 Theoretical approaches ................ 29

4.2 Dipole approximation ................. 31

4.3 Low-energy approximation .............. 34

4.4 Recombination cross sections ............. 36

4.5 Angular distribution of photons ........... 39

4.6 Recombination rates ................. 42

4.7 Photon polarization .................. 49

4.8 Total radiative recombination rates ......... 55

4.9 Field-ionization effect ................. 57

4.10 Radiative recombination with non-bare ions .... 60

5 CRYRING-heavy ion storage ring 63

5.1 The CRYRING concept ............... 63

5.2 Beam diagnostics ................... 69

5.3 Research program .................. 71

6 Measurements of recombination rates 73

6.1 Experimental arrangement .............. 75

6.2 Measurements ..................... 78

6.3 Comparison with theory of RR . .

6.4 Collisional-radiative recombination

6.5 Other RR experiments .......

7 Perspectives

8 Summary

9 References

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