Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope K-31 by Measuring Its Three-Proton Decay
Artikel i vetenskaplig tidskrift, 2019

The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed: K-31. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products using microstrip detectors. The 3p emission processes have been studied by the means of angular correlations of S-28 + 3p and the respective decay vertices. The energies of the previously unknown ground and excited states of K-31 have been determined. This provides its 3p separation energy value S-3p of -4.6(2) MeV. Upper half-life limits of 10 ps of the observed K-31 states have been derived from distributions of the measured decay vertices.

isotopes

two-proton decay

protons

decay

Författare

D. Kostyleva

Justus Liebig University Giessen

GSI Helmholtzzentrum für Schwerionenforschung

I Mukha

GSI Helmholtzzentrum für Schwerionenforschung

L. Acosta

Istituto Nazionale di Fisica Nucleare

Universidad Nacional Autonoma de Mexico

E. Casarejos

Universidad de Vigo

V Chudoba

Silesian Univ Opava

Joint Institute for Nuclear Research (JINR)

A. A. Ciemny

Uniwersytet Warszawski

W. Dominik

Uniwersytet Warszawski

J. A. Duenas

Universidad de Huelva

V Dunin

Joint Institute for Nuclear Research (JINR)

J. M. Espino

Universidad de Sevilla

A. Estrade

University of Edinburgh

F. Farinon

GSI Helmholtzzentrum für Schwerionenforschung

A. Fomichev

Joint Institute for Nuclear Research (JINR)

H. Geissel

GSI Helmholtzzentrum für Schwerionenforschung

Justus Liebig University Giessen

A. Gorshkov

Joint Institute for Nuclear Research (JINR)

Grigorenko

National Research Centre "Kurchatov Institute"

National Research Nuclear University

Joint Institute for Nuclear Research (JINR)

Z. Janas

Uniwersytet Warszawski

G. Kaminski

Joint Institute for Nuclear Research (JINR)

Uniwersytet Warszawski

O. Kiselev

GSI Helmholtzzentrum für Schwerionenforschung

R. Knobel

Justus Liebig University Giessen

GSI Helmholtzzentrum für Schwerionenforschung

S. Krupko

Joint Institute for Nuclear Research (JINR)

M. Kuich

Uniwersytet Warszawski

Politechnika Warszawska

Yu A. Litvinov

GSI Helmholtzzentrum für Schwerionenforschung

G. Marquinez-Duran

Universidad de Huelva

I Martel

University of Liverpool

C. Mazzocchi

Uniwersytet Warszawski

C. Nociforo

GSI Helmholtzzentrum für Schwerionenforschung

A. K. Orduz

Grand Accélérateur National d'Ions Lourds (GANIL)

M. Pfutzner

Uniwersytet Warszawski

GSI Helmholtzzentrum für Schwerionenforschung

S. Pietri

GSI Helmholtzzentrum für Schwerionenforschung

M. Pomorski

Uniwersytet Warszawski

A. Prochazka

GSI Helmholtzzentrum für Schwerionenforschung

S. Rymzhanova

Joint Institute for Nuclear Research (JINR)

A. M. Sanchez-Benitez

Universidad de Huelva

C. Scheidenberger

GSI Helmholtzzentrum für Schwerionenforschung

Justus Liebig University Giessen

H. Simon

GSI Helmholtzzentrum für Schwerionenforschung

B. Sitar

Univerzita Komenskeho v Bratislave

R. Slepnev

Joint Institute for Nuclear Research (JINR)

M. Stanoiu

IFIN HH

P. Strmen

Univerzita Komenskeho v Bratislave

I Szarka

Univerzita Komenskeho v Bratislave

M. Takechi

GSI Helmholtzzentrum für Schwerionenforschung

Y. K. Tanaka

GSI Helmholtzzentrum für Schwerionenforschung

University of Tokyo

H. Weick

GSI Helmholtzzentrum für Schwerionenforschung

M. Winkler

GSI Helmholtzzentrum für Schwerionenforschung

J. S. Winfield

GSI Helmholtzzentrum für Schwerionenforschung

X. Xu

Chinese Academy of Sciences

GSI Helmholtzzentrum für Schwerionenforschung

Justus Liebig University Giessen

Mikhail Zhukov

Chalmers, Fysik

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 123 9 092502

Ämneskategorier

Acceleratorfysik och instrumentering

Subatomär fysik

Astronomi, astrofysik och kosmologi

DOI

10.1103/PhysRevLett.123.092502

PubMed

31524489

Mer information

Senast uppdaterat

2019-10-28