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Chiral Fermion Pair Production from Parallel E and B Fields (and the Physics Involved)
by Gerald Cleaver
As recent articles [1-7] further suggest, matter/antimatter (MAM)-based propulsion systems may be viable options for both intrasolar system and interstellar travel. Several critical design and engineering issues, especially with regard to the interstellar case, have been raised in these articles and will likely take a long time to resolve. As the articles have discussed, MAM could be (i) collected in advance of a space journey (and then stored in separate magnetic bottles or rings until needed for thrust) and/or collected along the journey through interstellar space [2-5] , or (ii) created on-board the ship [1]. One suggestion for advanced collection (or for sporadic collection en route during encounters with solar systems) is from gaseous Jovian-like planets or (as suggested by PAMELA results) from the Van Allen belt of earth-like planets. Alternately, Obousy investigates in [1] the feasibility and functionality of on-board MAM creation via Schwinger pair production from the vacuum of space through intense electric fi eld quantum e ffects. With regard to this, Obousy notes that lasers are reaching the critical strength to produce in this manner real electron-positron pairs. For MAM collection or creation, additional external magnetic fields are then needed to align the MAM in the chosen direction of thrust. Collection and creation options were considered and compared in [2], including pair production rates and related costs.
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Chiral Fermion Pair Production from Parallel E and B Fields (and the Physics Involved)
This is a submission by the Icarus Interstellar Exotic Research Group.
Figure 1.
Collection of MAM enroute from adjacent solar systems would require highly-versatile propulsion and attitude control systems. More often than not, propulsion systems in spacecraft had been designed to be turned on just once during trips. During the Apollo program, only the service module and the lunar module were required to provide multiple starts and a higher-than-normal control, and they remained a source of concern during the whole program; such level of reliability proved to be a huge hurdle to overcome. So, history tells that designing propulsion systems capable of more sophisticated handling than just turing it on and off would likely increase costs significantly. While these were chemical, reactive rocket engines, it is reasonable to expect that, unless proven otherwise, MAM systems would pose similar problems. Stopping sporadically at solar systems on the way in the case of interstellar ships at our present or predictable level of technology (no FTL travel, insofar) would require any such ship to perform slow-down procedures that would take years to complete, and then replenishment at such spots plus re-plotting of the original route based on unpredictable factors found in the way could become a problem. So, at least in my opinion, it would be probably less expensive to focus initally more on designs based on point-to-point navigation rather than assuming that technical stops along the way would be possible. I am not saying that they are not, but budgetary reasons might make it better to go non-stop, either by carrying everything required from the beginning, or by collecting MAM along the way, but during actual navigation.
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