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.

decay

isotopes

two-proton decay

protons

Författare

D. Kostyleva

Justus Liebig University Giessen

Helmholtz

I Mukha

Helmholtz

L. Acosta

Universidad Nacional Autonoma de Mexico

Istituto Nazionale di Fisica Nucleare

E. Casarejos

Universidad de Vigo

V Chudoba

Joint Institute for Nuclear Research (JINR)

Silesian Univ Opava

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

Helmholtz

A. Fomichev

Joint Institute for Nuclear Research (JINR)

H. Geissel

Justus Liebig University Giessen

Helmholtz

A. Gorshkov

Joint Institute for Nuclear Research (JINR)

Grigorenko

Joint Institute for Nuclear Research (JINR)

National Research Centre "Kurchatov Institute"

National Research Nuclear University

Z. Janas

Uniwersytet Warszawski

G. Kaminski

Uniwersytet Warszawski

Joint Institute for Nuclear Research (JINR)

O. Kiselev

Helmholtz

R. Knobel

Helmholtz

Justus Liebig University Giessen

S. Krupko

Joint Institute for Nuclear Research (JINR)

M. Kuich

Uniwersytet Warszawski

Politechnika Warszawska

Yu A. Litvinov

Helmholtz

G. Marquinez-Duran

Universidad de Huelva

I Martel

University of Liverpool

C. Mazzocchi

Uniwersytet Warszawski

C. Nociforo

Helmholtz

A. K. Orduz

Grand Accélérateur National d'Ions Lourds (GANIL)

M. Pfutzner

Uniwersytet Warszawski

Helmholtz

S. Pietri

Helmholtz

M. Pomorski

Uniwersytet Warszawski

A. Prochazka

Helmholtz

S. Rymzhanova

Joint Institute for Nuclear Research (JINR)

A. M. Sanchez-Benitez

Universidad de Huelva

C. Scheidenberger

Helmholtz

Justus Liebig University Giessen

H. Simon

Helmholtz

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

Helmholtz

Y. K. Tanaka

Helmholtz

University of Tokyo

H. Weick

Helmholtz

M. Winkler

Helmholtz

J. S. Winfield

Helmholtz

X. Xu

Helmholtz

Justus Liebig University Giessen

Chinese Academy of Sciences

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

2020-09-15