Spectroscopy at the high-energy electron beam ion trap (SuperEBIT)

被引:8
作者
Widmann, K
Beiersdorfer, P
LopezUrrutia, JRC
Elliott, SR
机构
[1] GRAZ TECH UNIV,INST EXPT PHYS,A-8010 GRAZ,AUSTRIA
[2] UNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195
来源
HYPERFINE INTERACTIONS | 1997年 / 108卷 / 1-3期
关键词
X-RAY SPECTROMETER; LAMB-SHIFT; POLARIZATION CONTRIBUTION; 2S(1/2)-2P(3/2) LEVELS; NUCLEAR-POLARIZATION; HYPERFINE-STRUCTURE; URANIUM; HYDROGENLIKE; HO-165; STATES;
D O I
10.1023/A:1012677705541
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
The following progress report presents some of the X-ray measurements performed during the last year on the Livermore SuperEBIT facility. The measurements include: direct observation of the spontaneous emission of the hyperfine transition in ground state hydrogenlike holmium, Ho-165(66+); measurements of the n = 2 --> 2 transition energies in neonlike thorium, Th80+, through lithiumlike thorium, Th87+, testing the predictions of quantum electrodynamical contributions in high-Z ions down to the 0.4% level; measurements of the isotope shift of the n = 2 --> 2 transition energies between lithiumlike through carbonlike uranium, (233)U(89+...86+)and U-238(89+... 86+), inferring the variation of the mean-square nuclear charge radius; and high-resolution measurements of the K-alpha radiation of heliumlike xenon, Xe52+, using a transmission-type crystal spectrometer, resolving for the first time the 1s2p(3)P(1)--> 1s(21)S(0) and 1s2s(3)S(1)--> 1s(21)S(0) transitions individually.
引用
收藏
页码:73 / 86
页数:14
相关论文
共 42 条
[1]  
ANASTASSOV A, 1992, HYPERFINE INTERACT, V74, P31, DOI 10.1007/BF02398614
[2]   LOW-ENERGY X-RAY SPECTROMETER FOR AN ELECTRON-BEAM ION-TRAP [J].
BEIERSDORFER, P ;
WARGELIN, BJ .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1994, 65 (01) :13-17
[3]   HIGH-RESOLUTION X-RAY SPECTROMETER FOR AN ELECTRON-BEAM ION TRAP [J].
BEIERSDORFER, P ;
MARRS, RE ;
HENDERSON, JR ;
KNAPP, DA ;
LEVINE, MA ;
PLATT, DB ;
SCHNEIDER, MB ;
VOGEL, DA ;
WONG, KL .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1990, 61 (09) :2338-2342
[4]   STRUCTURE AND LAMB SHIFT OF 2S(1/2)-2P(3/2) LEVELS IN LITHIUM-LIKE U89+ THROUGH NEON-LIKE U82+ [J].
BEIERSDORFER, P ;
KNAPP, D ;
MARRS, RE ;
ELLIOTT, SR ;
CHEN, MH .
PHYSICAL REVIEW LETTERS, 1993, 71 (24) :3939-3942
[5]   STRUCTURE AND LAMB SHIFT OF 2S(1/2)-2P(3/2) LEVELS IN LITHIUM-LIKE TH87+ THROUGH NEON-LIKE TH80+ [J].
BEIERSDORFER, P ;
OSTERHELD, A ;
ELLIOTT, SR ;
CHEN, MH ;
KNAPP, D ;
REED, K .
PHYSICAL REVIEW A, 1995, 52 (04) :2693-2706
[6]   MEASUREMENT OF THE TEMPERATURE OF COLD HIGHLY-CHARGED IONS PRODUCED IN AN ELECTRON-BEAM ION-TRAP [J].
BEIERSDORFER, P ;
DECAUX, V ;
WIDMANN, K .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1995, 98 (1-4) :566-568
[7]   IMPROVED MANY-BODY PERTURBATION-THEORY CALCULATIONS OF THE N = 2 STATES OF LITHIUMLIKE URANIUM [J].
BLUNDELL, SA ;
JOHNSON, WR ;
SAPIRSTEIN, J .
PHYSICAL REVIEW A, 1990, 41 (03) :1698-1700
[8]   ACCURATE SCREENED QED CALCULATIONS IN HIGH-Z MANY-ELECTRON IONS [J].
BLUNDELL, SA .
PHYSICAL REVIEW A, 1992, 46 (07) :3762-3775
[9]   SPECTROSCOPIC STUDY OF HYDROGENLIKE AND HELIUMLIKE XENON IONS [J].
BRIAND, JP ;
INDELICATO, P ;
SIMIONOVICI, A ;
VICENTE, VS ;
LIESEN, D ;
DIETRICH, D .
EUROPHYSICS LETTERS, 1989, 9 (03) :225-230
[10]   OBSERVATION OF ISOTOPE SHIFT OF KALPHA1 X RAYS OF URANIUM [J].
BROCKMEIER, RT ;
BOEHM, F ;
HATCH, EN .
PHYSICAL REVIEW LETTERS, 1965, 15 (04) :132-+