Alpha-decay of light protactinium isotopes

Conference · Thu Dec 10 00:00:00 EST 1987 · AIP Conf. Proc.; (United States)

OSTI ID:5462676

Faestermann, T; Gillitzer, A; Hartel, K; Henning, W; Kienle, P

Light protactinium isotopes have been produced with /sup 204/Pb (/sup 19/F,xn) reactions. ..cap alpha..-activities with E/sub ..cap alpha../ = 9.90(5) MeV, T/sub 1/2/ = 53(10) ns and E/sub ..cap alpha../ = 9.65(5) MeV, T/sub 1/2/ = 0.78(16) ..mu..s could be attributed to the previously unobserved nuclei /sup 219/Pa and /sup 220/Pa with the help of excitation functions. The peak cross sections for the 4n and 3n evaporation channels are on the order of 10 ..mu..b. The decay energies as well as the halflives fit well into the systematics of these nuclei close to the magic neutron number N = 126. /sup 219/Pa is the shortest lived nuclide known with directly measured halflife.

• Research Organization: Technische Universitaet Muenchen, D8046 Garching, FRG
• OSTI ID: 5462676
• Report Number(s): CONF-870970-; TRN: 88-012608
• Journal Information: AIP Conf. Proc.; (United States), Vol. 164:1; Conference: 5. international conference on nuclei far from stability, Lake Rosseau, Canada, 14 Sep 1987
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FLUORINE 19 REACTIONS
HEAVY ION FUSION REACTIONS
LEAD 204 TARGET
PROTACTINIUM 219
ALPHA DECAY
ALPHA SPECTRA
HALF-LIFE
MEV RANGE 10-100
NUCLEONS
ACTINIDE ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARYONS
CHARGED-PARTICLE REACTIONS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HEAVY ION REACTIONS
ISOTOPES
MEV RANGE
NANOSEC LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PROTACTINIUM ISOTOPES
RADIOISOTOPES
SPECTRA
TARGETS
651920* - Nuclear Properties & Reactions
A=190-219
Experimental