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Margareta Hellström

Forskare

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Recent Results in Fragmentation Isomer Spectroscopy with RISING

Författare

  • S Pietri
  • P H Regan
  • Zs Podolyák
  • Dirk Rudolph
  • Margareta Hellström
  • Lise-Lotte Andersson
  • Claes Fahlander
  • Emma Johansson

Summary, in English

The first results from the stopped beam RISING experimental campaign performed at the GSI laboratory in Darmstadt, Germany, are presented. RISING (Rare ISotope Investigations at GSI) constitutes a major new experimental program in European nuclear structure physics research aimed at using relativistic energy (typically around 1 GeV per nucleon) projectile fragmentation reactions to populate nuclei with highly exotic proton-to-neutron ratios compared to the line of beta stability. In its high-efficiency ‘stopped beam’ configuration, the RISING γ-ray spectrometer consists of 105 individual, large volume germanium crystals which view a focal plane in which the exotic nuclei are brought to rest (i.e. ‘stopped’). Here, decays from metastable or ‘isomeric’ states with half-lives in the nano to milliseconds range can be observed, often providing the first spectroscopic information on these exotic nuclear species. This paper introduces the physics aims of the stopped RISING collaboration and presents some technical details on the RISING detector array. Results of initial commissioning experiments are also shown and details of the planned future experimental program are given.

Avdelning/ar

  • Kärnfysik
  • Institutionen för naturgeografi och ekosystemvetenskap

Publiceringsår

2007

Språk

Engelska

Sidor

1079-1083

Publikation/Tidskrift/Serie

Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

Volym

261

Issue

1-2

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Subatomic Physics

Status

Published

Forskningsgrupp

  • Nuclear Structure

ISBN/ISSN/Övrigt

  • ISSN: 0168-583X