| Autor: |
John O. de Lorge, Shin-Tsu Lu |
| Rok vydání: |
2000 |
| Předmět: |
|
| Zdroj: |
Advances in Electromagnetic Fields in Living Systems ISBN: 9781461368861 |
| DOI: |
10.1007/978-1-4615-4203-2_6 |
| Popis: |
During the early years of research on the potential hazards of Radio Frequency (RF) radiation, scientists have considered the possibility that a pulsed RF field could produce effects other than those produced by continuous-wave (CW) radiation at the same average power. Recent developments in high peak power pulsed microwave systems have rekindled interest in exploring potential biological effects of high peak power radiofrequency pulses. Systems capable of delivering 100 gigawatt (GW) pulses to a transmitting antenna and establishing hundreds of kV/m peak E-field intensity in the beam path are known to exist [Agee et al.1995]. Safety aspects of high peak power, ultra-short electromagnetic signals have been questioned [Albanese et al.1994] and debated [Merritt et al.1995, Adair 1995]. Postow and Swicord [1996]concluded that pulsed microwaves produced by radar transmitters could not cause biological effects other than those caused by exposure to continuous wave (CW) radiation at the same average power density of the pulsed microwaves. Apparently, their conclusion should not be generalized to include the specific and replicable auditory effects of microwave pulses. Lin [1989] found that few protection guidelines and exposure standards published by various organizations have established limits to guard against potential hazards of pulsed RF radiation. Studies on comparisons of biological effects between high peak power but low average pulsed RF radiation and CW radiation of equal average intensity (absorption) are sparse. As a result, existing personnel protection guidelines for high peak power pulsed radiofrequency radiation have often been based on guess work with many uncertainties. This lack of an adequate or appropriate biological database for pulsed RF has recently been recognized by at least one standards’ setting group, ICNIRP [ICNIRP 1998]. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
