<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Ngemva kwempi, uLeona Marshall wabuyela e-University of Chicago, lapho aba khona ilungu le-Fermis Institute for Nuclear Studies. Esebenza ne-Chicago Pile 3 heavy water reactor, wathola indlela yokwenza i-100 spin polarize neutron beams, futhi wanquma i-refractive index yama-neutron ngezinto ezihlukahlukene. Ingane yakhe yesibili, uJohn Marshall III, yazalwa ngo-1949. Waba nguprofesa osizayo ngo-1953. Ngemva kokufa kukaFermi ngo-1954, abakwaMarshall bahlukana. UJohn Marshall wabuyela eLaboratory yaseLos Alamos, kuyilapho uLeona, manje owayengumama ongayedwa, aba umsizi e-Institute for Advanced Study ePrinceton, eNew Jersey ngo-1957. Ngonyaka olandelayo waba umsizi eBrookhaven National Laboratory, ngesikhathi lapho ukugxila ocwaningweni lwe-physics kwakusuka kude ne-nucleus kuya ezinhlayiyeni eziyisisekelo. Ngo-1960, wajoyina iNyuvesi yaseNew York njengoprofesa ohlangene we-physics. Waba nguprofesa ngo-1962.Eminyakeni emithathu kamuva, waba nguprofesa e-University of Colorado, ecwaninga nge-high-energy physics, i-astrophysics kanye ne-cosmology. Wabe eseba yilungu labasebenzi eRAND Corporation, lapho asebenza khona kwaze kwaba ngu-1976. Ngo-1966, wahlukanisa noJohn Marshall, futhi washada noWillard Libby, owayethole umklomelo kaNobel ngo-1960. Kamuva wajoyina yena e-UCLA, lapho aba khona uprofesa wezifundo zezemvelo, ubunjiniyela, ubunjiniyela be-archaeology, i-aerospace mechanical kanye nobunjiniyela be-nuclear ngo-1973. Manje owaziwa ngokuthi uLeona Marshall Libby, waba nentshisekelo ezindabeni zemvelo nezemvelo, futhi wasungula indlela yokusebenzisa isilinganiso se-isotope se-Oxygen-18 kuya ku-Oxygen-16, iCarbon-13 kuya kuCarbon-12, neDeuterium kuya ku-Hydrogen kumabhande ezihlahla ukutadisha izinguquko ekushiseni nasezimweni zemvula amakhulu eminyaka ngaphambi kokuba kugcinwe amarekhodi, okuvula umnyango ocwaningweni lokushintsha kwesimo sezulu. NjengoWillard Libby, wayengummeli oqinile wokukhishwa kwe-radiation kokudla njengendlela yokubulala amagciwane ayingozi, futhi wakhuthaza ukuthi imikhawulo yezomthetho neyokulawula ekusetshenzisweni kwayo ixazululwe. Yena... Umbuzo: Kwakungubani igama lengane yesibili kaLeona?  <response>: UJohn Marshall III 