The coefficients of the internal pair formation in the γ-transitions Co⁶⁰ → Ni⁶⁰ and Pr¹⁴² → Nd¹⁴²

Journal Article · Tue Aug 01 04:00:00 EDT 1961 · European Physical Journal. A

DOI:https://doi.org/10.1007/BF01381895· OSTI ID:4804091

Langhoff, H.; Kilian, P.; Flammersfeld, A.

The coefficients epsilon of internal pair formation of the 1.17 and 1.33 Mev transitions in Ni⁶⁰ and of the 1.57 Mev transition in Nd¹⁴² were measured by detecting the annihilation radiation of the positrons. The values epsilon = (3.7 plus or minus 0.6) x 10^-5 for Ni⁶⁰ and epsilon = The results for Ni⁶⁰ are in good agreement with theoretical calculations. The 1.57 Mev transition in Nd¹⁴²is identified as electric quadrupole and the first excited level of Nd¹⁴² is determined to be 2⁺ . By further measurements the partial transition from Pr¹⁴² to the first excited level of Nd¹⁴² was found to be (3.7 plus or minus 0.4)% per disintegration. No K capture of Pr¹⁴² more than 2 x 10^-4 could be detected.

• Research Organization: Universitat, Gottingen, Ger.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-012532
• OSTI ID: 4804091
• Journal Information: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 4 Vol. 165; ISSN 1434-6001
• Publisher: Springer
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANNIHILATION
COBALT 60
DECAY
DETECTION
ELECTRIC FIELDS
ENERGY LEVELS
EXCITATION
GAMMA RADIATION
MEASURED VALUES
NEODYMIUM 142
NICKEL 60
PAIR PRODUCTION
POSITRONS
PRASEODYMIUM 142
QUADRUPOLES
TRANSIENTS