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Gott, M. D.

Publications and source records attributed to Gott, M. D..

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2022

Quenching of Single-Particle Strength in A=15 Nuclei

Here, absolute cross sections for the addition of s- and d-wave neutrons to 14 C and 14 N have been determined simultaneously via the (d,p) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, ΔS, is around -20 MeV for the 14 C+n system and +8 MeV for 14 N+n. The population of the 1s 1/2 and 0d 5/2 orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of 9 Be and 12 C. The simultaneous technique used removes many systematic uncertainties.

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
DOE OSTI2019

Isotopic carbon targets

Neutron-rich isotopic 14 C targets are of interest to the nuclear physics community and would be in high demand at any thickness. Applied Nanotech, Inc. (ANI) has developed freestanding nat C and 13 C carbon foils fabricated using a drawdown printing technique. Isotopic enriched 13 C targets are produced at ANI, with the 14 C targets to be fabricated at Argonne National Laboratory (ANL) using stock material available at Argonne. The 14 C target material is nominally enriched to ~73% 14 C and will contain 2.2% organic binder. The fabrication process is highly material-efficient and can be used to produce targets that are difficult to fabricate by other methods. Finally, to be developed, 12 C ( 13 C-depleted natural carbon) which could also be used in accelerators for target applications.

07 ISOTOPE AND RADIATION SOURCES↗