Spatial characterization of the internal gas target at the ESR for the FOCAL experiment

被引：7

作者：

Gassner, T. ^{[1
]}

Beyer, H. F. ^{[1
]}

机构：

[1] GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany

来源：

PHYSICA SCRIPTA | 2015年 / T166卷

关键词：

gas target characterization; Lamb-shift; highly charged ions;

D O I：

10.1088/0031-8949/2015/T166/014052

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The FOCAL experiment involves a highly accurate twin crystal spectrometer, designed for the measurement of the ground state Lamb shift of stored highly charged ions, like hydrogen-like Au78+, via spectroscopy in the hard-x-ray regime with an accuracy down to the few-eV level where higher-order QED contributions become accessible. For this level of accuracy all geometrical parameters including the position of the x-ray source are of crucial importance. In this conference proceeding we present our efforts to characterize the internal gas target at the experiment storage ring at GSI Darmstadt where in 2012 the FOCAL experiment was conducted.

引用

页数：4

共 4 条

[1] Crystal optics for hard-X-ray spectroscopy of highly charged ions [J].

Beyer, H. F. ;

Attia, D. ;

Banas, D. ;

Le Bigot, E. -O. ;

Bosch, F. ;

Dousse, J. -Cl. ;

Foerster, E. ;

Gumberidze, A. ;

Hagmann, S. ;

Hess, S. ;

Hoszowska, J. ;

Indelicato, P. ;

Jagodzinski, P. ;

Kozhuharov, Chr. ;

Krings, Th. ;

Liesen, D. ;

Ma, X. ;

Manil, B. ;

Mohos, I. ;

Pajek, M. ;

Protic, D. ;

Reuschl, R. ;

Rzadkiewicz, J. ;

Simionovici, A. ;

Spillmann, U. ;

Stachura, Z. ;

Stoehlker, Th. ;

Trassinelli, M. ;

Trotsenko, S. ;

Warczak, A. ;

Wehrhan, O. ;

Ziegler, E. .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2009, 64 (08) :736-743

[2] Commissioning of a hydrogen cluster target at the experimental storage ring [J].

Krämer, A ;

Kritzer, A ;

Reich, H ;

Stöhlker, T .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2001, 174 (1-2) :205-211

[3] Low-Z internal target from a cryogenically cooled liquid microjet source [J].

Kuehnel, M. ;

Petridis, N. ;

Winters, D. F. A. ;

Popp, U. ;

Doerner, R. ;

Stoehlker, Th. ;

Grisenti, R. E. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2009, 602 (02) :311-314

[4]

Reich H., 1997, NUCL PHYS A, V626, P417

← 1 →