Published November 1977 | Version v1
Journal article Metadata-only

The internal conversion of the N = 81 isotones sup(139m)Ce and sup(141m)Nd

Creators

  • 1. Goettingen Univ. (Germany, F.R.). 2. Physikalisches Inst.

Description

A rapid gas-jet system was used for preparation of β--samples of sup(139m)Ce and sup(141m)Nd. Conversion electrons and photons were detected simultaneously with absolutely calibrated detectors. Conversion coefficients αsub(K) = 0.0732 +- 0.0023 and αsub(K) = 0.0824 +- 0.0029, conversion ratios K/L +... = 4.68 +- 0.20 and K/L +... = 4.58 +- 0.23 were measured for sup(139m)Ce, and sup(141m)Nd, respectively. The calculated M4 values of Hager and Seltzer, and Dragoun et al. were confirmed within the experimental accuracy. (orig.)

Abstract (German)

Fuer die Herstellung von β--Praeparaten aus sup(139m)Ce und sup(141m)Nd wurde ein schnelles Gasduesensystem verwendet. Mit absolut geeichten Detektoren wurden Konversionselektronen und Photonen gleichzeitig nachgewiesen. Fuer das sup(139m)Ce bzw. sup(141m)Nd wurden Konversionskoeffizienten von αsub(K) = 0,0732 +- 0,0023 und αsub(K) = 0,0824 +- 0,0029, sowie Konversionverhaeltnisse von K/L +... = 4,68 +- 0,20 und K/L +... = 4,58 +- 0,23 gemessen. Die von Hager und Seltzer sowie Dragoun et al. berechneten M4-Werte wurden innerhalb der Messgenauigkeit bestaetigt. (orig.)

Additional details

Identifiers

DOI
10.1007/bf01411322;

Publishing Information

Journal Title
Zeitschrift f�r Physik A
Journal Volume
284
Journal Issue
2
Series
Z. Phys., A.
Journal Page Range
157-160
ISSN
0340-2193

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
9375169
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
CERIUM 139; ELECTRON SPECTRA; GAMMA SPECTRA; ISOMERIC NUCLEI; K CONVERSION; L CONVERSION; MIXING RATIO; NEODYMIUM 141
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CERIUM ISOTOPES; CONVERSION; DAYS LIVING RADIOISOTOPES; DECAY; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; GAMMA DECAY; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NEODYMIUM ISOTOPES; NUCLEAR DECAY; NUCLEI; RADIOISOTOPES; RARE EARTH NUCLEI; SPECTRA

Optional Information

Notes
4 figs.; 1 tab.; 19 refs.; Updated automatically by Metadata and Full-Text Enrichment Agent