4 Conferences false [["minutes", "Minutes"], ["1", "More information about the venue"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] ICN-UNAM 1482bc95ee34f0461176da21871284c8 3 icrc2007@icrc2007.unam.mx The 30th International Cosmic Ray Conference will be held from July 3, 2007 to July 11, 2007 in Merida, Yucatan, Mexico. True Merida, Mexico

2007-07-03T08:00:00 2007-07-11T19:00:00 2005-09-26T05:04:53 2024-04-12T17:46:55 Mexico/General IGeof-UNAM 40af9343b8bb9d18708b4f0252d5f53c 439 false [["minutes", "Minutes"], ["1", "More information about the venue"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] SH.3.6 0 Oral BHABHA ATOMIC RESEARCH CENTRE f3e51ba58d8b68ff7faa14ae7bafdfea BHABHA ATOMIC RESEARCH CENTRE f3e51ba58d8b68ff7faa14ae7bafdfea BHABHA ATOMIC RESEARCH CENTRE 3c16e6ce20437ee2d2e9500d381352de BHABHA ATOMIC RESEARCH CENTRE 36f28f3ec6a3022a1dfb7527aa7b9307 BHABHA ATOMIC RESEARCH CENTRE 984e6ce9b5a6fbc403d7ac28a32e054d Merida, Mexico

Yucatan I (Fiesta Americana) 00:12 Lead-free Neutron Monitor operating at High Altitude Research Laboratory, Gulmarg has been utilized to detect MeV energy neutron bursts produced in the lightning discharge channels. The experiment provided the first experimental evidence of neutron production in the lightning discharges. The neutrons were recorded in predetermined time interval of 320 microseconds after the detection of the first neutron in successive time bins of 80-microseconds each. The time-delay between the sensing of electric field change associated with lightning discharges and detection of first neutron from the production site would relate to the distance of the neutron production site. However, the system was not capable of recording the profile of the neutron bursts and was not able to identify the specific stroke responsible for the production of these neutrons in a multi-stroke lightning discharge. To overcome these limitations the electronic circuitry of the system was redesigned. The modified system has the provision of recording neutron burst profile in time range of 315 microseconds to 4.41 milliseconds in sixty three sucessive time bins with each bin adjustable from 5 microseconds to 70 microseconds. The new system has sucessfully detected several major neutron burst events after the initiation of the lightnings in the vicinity of the detector. Burst profiles of these neutron will be presented and discussed in relation to the propagation characteristics of these neutrons and their mode of production in the lightning channels. 1 http://www.icrc2007.unam.mx/ link http://www.icrc2007.unam.mx/ doc http://indico.nucleares.unam.mx/images/word.png word file ppt http://indico.nucleares.unam.mx/images/powerpoint.png powerpoint file pdf http://indico.nucleares.unam.mx/images/pdf_small.png pdf file odt http://indico.nucleares.unam.mx/images/writer.png writer file odp http://indico.nucleares.unam.mx/images/impress.png presentation file ods http://indico.nucleares.unam.mx/images/calc.png spreadsheet file other http://indico.nucleares.unam.mx/images/file_small.png unknown type file link http://indico.nucleares.unam.mx/images/link.png link