Electron transfer processes in collisions of highly charged energetic (0. 1 to 1. 0 MeV/nucleon) ions with helium atoms

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6604605

Datz, S; Hippler, R; Andersen, L H; Dittner, P F; Knudsen, H; Krause, H F; Miller, P D; Pepmiller, P L; Rosseel, T; Stolterfoht, N

We have investigated charge transfer in collisions of energetic (0.1 - 1 MeV/nucleon) highly charged ions with helium atoms with the principal aim clarifying the nature of two-electron processes. The sensitivity of partial charge-changing cross sections (i.e., single- and double-charge transfer, transfer ionization (TI), and single and double ionization) to core configuration and scaling rules for one- and two-electron processes were investigated with iodine ions (q = 5+ ..-->.. 26+) and uranium ions (q = 17+ ..-->.. 44+) using an ion-charge state, recoil-ion coincidence method. Using zero-degree electron spectroscopy in coincidence with charge transfer, we found that at the higher energies, as in the case of 0.1 MeV/nucleon ions previously reported, TI involves the transfer of two electrons to a higher correlated state followed by loss of one electron to the continuum. In addition, we observe very high Rydberg electrons in coincidence with TI, implying a possible up-down correlation in the pair transfer. In addition, we made measurements of VUV photons emitted at the collision in coincidence with He/sup +/ and He/sup 2 +/ recoils. The results show that TI leads to capture into lower n states than single-charge transfer. 15 refs., 10 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6604605
• Report Number(s): CONF-8703116-3; ON: DE87008808
• Resource Relation: Conference: US-Japan seminar on interactions of highly ionized atoms produced in heavy-ion collisions, Kobe, Japan, 16 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ION-ATOM COLLISIONS
CHARGE-EXCHANGE REACTIONS
GOLD 197
IODINE 127
URANIUM 238
CROSS SECTIONS
ELECTRON SPECTROSCOPY
EXPERIMENTAL DATA
HELIUM
MEV RANGE 01-10
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ATOM COLLISIONS
COLLISIONS
DATA
ELEMENTS
ENERGY RANGE
EVEN-EVEN NUCLEI
FLUIDS
GASES
GOLD ISOTOPES
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ION COLLISIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
RADIOISOTOPES
RARE GASES
SECONDS LIVING RADIOISOTOPES
SPECTROSCOPY
STABLE ISOTOPES
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena