Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Bayanin: Bayan Hukumar Kula da Makamashi ta Atomic (AEC) ta wanzu a 1947 a matsayin hukumar farar hula da ke kula da binciken nukiliya da batutuwan makamai, an nada Oppenheimer a matsayin Shugaban Kwamitin Ba da Shawarar Janar (GAC). Daga wannan matsayin ya ba da shawara kan batutuwan da suka shafi nukiliya, gami da kudaden aikin, gina dakunan gwaje-gwaje har ma da manufofin kasa da kasa, kodayake ba a saurari shawarar GAC koyaushe ba. A matsayinsa na Shugaban GAC, Oppenheimer ya yi aiki tukuru don kula da makamai na kasa da kasa da kuma kudade don ilimin kimiyya, kuma ya yi ƙoƙari ya rinjayi manufofi daga tseren makamai. Lokacin da gwamnati ta yi tambaya ko za a bi wani shirin gaggawa don samar da makamin nukiliya bisa ga nukiliya - bam din hydrogen - Oppenheimer da farko ya ba da shawarar a kan shi, ko da yake ya kasance yana goyon bayan samar da irin wannan makamin a lokacin Manhattan Project. Ya kasance yana motsa shi ta hanyar damuwa da ɗabi'a, yana jin cewa irin wannan makamin za a iya amfani da shi ne kawai a kan fararen hula, wanda ya haifar da mutuwar miliyoyin mutane. An kuma motsa shi da damuwa mai amfani, duk da haka, kamar yadda a lokacin babu wani zane mai aiki don bam din hydrogen. Oppenheimer ya ji cewa za a kashe albarkatu mafi kyau wajen ƙirƙirar manyan makamai masu rarrabuwa. Shi da wasu sun damu musamman game da matattarar nukiliya da aka karkatar daga plutonium zuwa samar da tritium. Truman ya yi watsi da su, wanda ya sanar da shirin gaggawa bayan da Tarayyar Soviet ta gwada bam din nukiliya na farko a shekarar 1949. Oppenheimer da sauran masu adawa da GAC na aikin, musamman James Conant, sun ji an guje su kuma sun yi la'akari da yin ritaya daga kwamitin. Sun zauna, duk da cewa an san ra'ayinsu game da bam din hydrogen.A cikin 1951, duk da haka, Edward Teller da masanin lissafi Stanislaw Ulam sun haɓaka abin da aka sani da Teller-Ulam zane don bam din hydrogen. Wannan sabon zane ya zama mai yiwuwa ne ta hanyar fasaha kuma Oppenheimer ya canza ra'ayinsa game da bunkasa makamin. Kamar yadda ya tuna daga baya:  Tambaya: Menene Oppenheimer yake so ya ƙirƙira?
babban karfi na fission makamai