Editing Fusion rocket (section)

=== Antimatter ===
A still more speculative concept is [[antimatter-catalyzed nuclear pulse propulsion]], which would use [[antimatter]] to catalyze a fission and fusion reaction, allowing much smaller fusion explosions to be created. During the 1990s an abortive design effort was conducted at Penn State University under the name [[AIMStar]].<ref name="antimatterpennn">{{cite journal |journal=[[Acta Astronautica]] |volume=44 |issue=2–4 |doi=10.1016/S0094-5765(99)00046-6 |title=AIMStar: Antimatter Initiated Microfusion For Pre-cursor Interstellar Missions |url=http://www.engr.psu.edu/antimatter/Papers/AIMStar_99.pdf |last1=Lewis |first1=Raymond A. |last2=Meyer |first2=Kirby |last3=Smith |first3=Gerald A. |last4=Howe |first4=Steven D. |archive-url=https://web.archive.org/web/20140616201812/http://www.engr.psu.edu/antimatter/Papers/AIMStar_99.pdf |archive-date=June 16, 2014 |year=1999 |pages=183–186 |url-status=dead |publisher=[[Pennsylvania State University]] |bibcode=1999AcAau..44..183G }}</ref> The project would require more antimatter than can currently be produced. In addition, some technical hurdles need to be surpassed before it would be feasible.<ref name="antimatternasa">{{cite tech report |url=http://www.engr.psu.edu/antimatter/papers/nasa_anti.pdf |title=Antimatter Production for Near-term Propulsion Applications |year=1999 |access-date=2013-05-24 |url-status=dead |archive-url=https://web.archive.org/web/20070306065325/http://www.engr.psu.edu/antimatter/Papers/NASA_anti.pdf |archive-date=2007-03-06 |last1=Schmidt |first1=G. R. |last2=Gerrish |first2=H. P. |last3=Martin |first3=J. J. |last4=Smith |first4=G. A. |last5=Meyer |first5=K. J. |publisher=[[NASA]] & [[Pennsylvania State University]] }}</ref>